Patents by Inventor Michael Pushkarsky
Michael Pushkarsky has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8879875Abstract: An optical fiber switch (16) for alternatively redirecting an input beam (14) comprises a redirector (18) and a redirector mover (20). The redirector (18) is positioned in the path of the input beam (14) along a directed axis (344A). The redirector (18) redirects the input beam (14) so that a redirected beam (46) alternatively launches from the redirector (18) (i) along a first redirected axis (354) that is spaced apart from the directed axis (344A) when the redirector (18) is positioned at a first position (348), and (ii) along a second redirected axis (356) that is spaced apart from the directed axis (344A) when the redirector (18) is positioned at a second position (350) that is different from the first position (348). The redirector mover (20) moves the redirector (18) about a movement axis (366) between the first position (348) and the second position (350). The redirector mover (20) includes a stator component (320A) and a rotor component (320B) that moves relative to the stator component (320A).Type: GrantFiled: November 29, 2012Date of Patent: November 4, 2014Assignee: Daylight Solutions, Inc.Inventors: Alexander Dromaretsky, Michael Pushkarsky, Brandon Borgardt
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Patent number: 8879590Abstract: A laser source assembly for providing an assembly output beam includes a first MIR laser source, a second MIR laser source, and a beam combiner. The first MIR laser source emits a first MIR beam that is in the MIR range and the second MIR laser source emits a second MIR beam that is in the MIR range. Further, the beam combiner spatially combines the first MIR beam and the second MIR beam to provide the assembly output beam. With this design, a plurality MIR laser sources can be packaged in a portable, common module, each of the MIR laser sources generates a narrow linewidth, accurately settable MIR beam, and the MIR beams are combined to create a multiple watt assembly output beam having the desired power.Type: GrantFiled: September 27, 2012Date of Patent: November 4, 2014Assignee: Daylight Solutions, Inc.Inventors: Michael Pushkarsky, Timothy Day, David F. Arnone
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Publication number: 20140314110Abstract: A laser source (340) comprises a first frame (356), a laser (358), and a first mounting assembly (360). The laser (358) generates an output beam (354) that is directed along a beam axis (354A). The first mounting assembly (360) allows the laser (358) to expand and contract relative to the first frame (356) along a first axis and along a second axis that is orthogonal to the beam axis, while maintaining alignment of the output beam (354) so the beam axis (354A) is substantially coaxial with the first axis. The first mounting assembly (360) can include a first fastener assembly (366) that couples the laser (358) to the first frame (356), and a first alignment assembly (368) that maintains alignment of the laser (358) along a first alignment axis (370) that is substantially parallel to the first axis.Type: ApplicationFiled: September 22, 2011Publication date: October 23, 2014Inventors: David F. Arnone, David P. Caffey, Michael Pushkarsky, Miles Weida
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Publication number: 20140269808Abstract: A laser assembly (10) that generates a beam (12) includes (i) a gain medium (22) that generates the beam (12) when electrical power is directed to the gain medium (22); (ii) a grating (32) positioned in a path of the beam (12); (iii) a grating arm (34) that retains the grating (32); and (iv) a mover assembly (36) that moves the grating arm (34) about a pivot axis (38). The mover assembly (36) includes a coarse mover (344) that makes large scale movements to the grating arm (34), and a fine mover (352) that makes fine movements to the grating arm (34). With this design, the mover assembly (36) can quickly and accurately move the grating (32) over a relatively large range.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Inventors: Michael Pushkarsky, Martin Algots, Satino Marrone, John Craig, Alexander Dromaretsky
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Patent number: 8774244Abstract: A laser source assembly for providing an assembly output beam includes a first emitter, a second emitter, and a third emitter. The first emitter emits a first beam along a first beam axis that is substantially parallel to and spaced apart from an assembly axis. The second emitter emits a second beam along a second beam axis that is substantially parallel to and spaced apart from the assembly axis. The third emitter emits a third beam along a third beam axis that is substantially parallel to and spaced apart from the assembly axis. The first beam axis, the second beam axis and the third beam axis are positioned spaced apart about and substantially equidistant from the assembly axis.Type: GrantFiled: November 22, 2011Date of Patent: July 8, 2014Assignee: Daylight Solutions, Inc.Inventors: Michael Pushkarsky, David F. Arnone, Matt Barre, David P. Caffey, Salvatore F. Crivello, Timothy Day, Kyle Thomas
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Patent number: 8565275Abstract: A laser source assembly (210) for generating an assembly output beam (212) includes a first laser source (218A), a second laser source (218B), and a dispersive beam combiner (222). The first laser source (218A) emits a first beam (220A) having a first center wavelength, and the second laser source (218B) emits a second beam (220B) having a second center wavelength that is different than the first center wavelength. The dispersive beam combiner (222) includes a common area 224 that combines the first beam (220A) and the second beam (220B) to provide the assembly output beam (212). The first beam (220A) impinges on the common area (224) at a first beam angle (226A), and the second beam (220B) impinges on the common area (224) at a second beam angle (226B) that is different than the first beam angle (226A). Further, the beams (220A) (220B) that exit from the dispersive beam combiner (222) are substantially coaxial, are fully overlapping, and are co-propagating.Type: GrantFiled: July 6, 2011Date of Patent: October 22, 2013Assignee: Daylight Solutions, Inc.Inventors: Michael Pushkarsky, David F. Arnone
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Publication number: 20130221152Abstract: A laser source assembly (210) for generating an assembly output beam (212) includes a first laser source (218A), a second laser source (218B), and a dispersive beam combiner (222). The first laser source (218A) emits a first beam (220A) having a first center wavelength, and the second laser source (218B) emits a second beam (220B) having a second center wavelength that is different than the first center wavelength. The dispersive beam combiner (222) includes a common area 224 that combines the first beam (220A) and the second beam (220B) to provide the assembly output beam (212). The first beam (220A) impinges on the common area (224) at a first beam angle (226A), and the second beam (220B) impinges on the common area (224) at a second beam angle (226B) that is different than the first beam angle (226A). Further, the beams (220A) (220B) that exit from the dispersive beam combiner (222) are substantially coaxial, are fully overlapping, and are co-propagating.Type: ApplicationFiled: July 6, 2011Publication date: August 29, 2013Inventors: Michael Pushkarsky, David F. Arnone
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Patent number: 8467430Abstract: An external cavity laser assembly (10) that generates a light beam (12) includes a gain medium (14) and a diffraction grating (24). The gain medium (14) has a growth direction (14C), a fast axis (14A), a first facet (34A), and a second facet (34B) that is spaced apart from the first facet (34A). The gain medium (14) emits from both facets (34A) (34B). Further, a beam polarization (30) of the light beam (32) emitting from the second facet (34B) is perpendicular to the growth direction (14C) and the fast axis (14A). The grating (24) includes a plurality of grating ridges (24A) that are oriented parallel to the beam polarization (30). Moreover, each of the grating ridges (24A) can have a substantially rectangular shaped cross-sectional profile.Type: GrantFiled: September 20, 2011Date of Patent: June 18, 2013Assignee: Daylight Solutions, Inc.Inventors: David P. Caffey, Michael Radunsky, Edeline Fotheringham, Michael Pushkarsky
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Publication number: 20130022311Abstract: An optical switch (16) for alternatively redirecting a source beam (14) includes a director assembly (18) that is selectively moveable between (i) a first switch position (350), (ii) a second switch position (352), and (iii) a dual switch position (354). In the first switch position (350), the source beam (14) passes to a first port (36). In the second switch position (352), the source beam (14) is directed to a second port (38). In the dual switch position (354), the director assembly (18) splits the source beam (14) into a first beam part (314A) that is directed to the first port (36), and a second beam part (314B) that is directed to the second port (38).Type: ApplicationFiled: January 26, 2012Publication date: January 24, 2013Applicant: Daylight Solutions, Inc.Inventors: Michael Pushkarsky, Bradley Charles Steele, Kyle Jay Laudner, Christopher Edward Hatch
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Patent number: 8335413Abstract: An optical fiber switch (16) for alternatively redirecting an input beam (14) comprises a redirector (18) and a redirector mover (20). The redirector (18) redirects the input beam (14) so that a redirected beam (46) alternatively launches from the redirector (18) (i) along a first redirected axis (354) that is spaced apart from a directed axis (344A) when the redirector (18) is positioned at a first position (348), and (ii) along a second redirected axis (356) that is spaced apart from the directed axis (344A) when the redirector (18) is positioned at a second position (350) that is different from the first position (348). The redirector mover (20) moves the redirector (18) about a movement axis (366) between the first position (348) and the second position (350).Type: GrantFiled: October 6, 2011Date of Patent: December 18, 2012Assignee: Daylight Solutions, Inc.Inventors: Alexander Dromaretsky, Michael Pushkarsky, Brandon Borgardt
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Patent number: 8306077Abstract: A laser source assembly (10) for providing an assembly output beam (12) includes a first MIR laser source (352A), a second MIR laser source (352B), and a beam combiner (244). The first MIR laser source (352A) emits a first MIR beam (356A) that is in the MIR range and the second MIR laser source (352B) emits a second MIR beam (356B) that is in the MIR range. Further, the beam combiner (244) spatially combines the first MIR beam (356A) and the second MIR beam (356B) to provide the assembly output beam (12). With this design, a plurality MIR laser sources (352A) (352B) can be packaged in a portable, common module, each of the MIR laser sources (352A) (352B) generates a narrow linewidth, accurately settable MIR beam (356A) (356B), and the MIR beams (356A) (356B) are combined to create a multiple watt assembly output beam (12) having the desired power. The beam combiner (244) can includes a combiner lens (364) and an output optical fiber (366).Type: GrantFiled: April 21, 2009Date of Patent: November 6, 2012Assignee: Daylight Solutions, Inc.Inventors: Michael Pushkarsky, Timothy Day, David F. Arnone
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Publication number: 20120106160Abstract: A laser source assembly for providing an assembly output beam includes a first emitter, a second emitter, and a third emitter. The first emitter emits a first beam along a first beam axis that is substantially parallel to and spaced apart from an assembly axis. The second emitter emits a second beam along a second beam axis that is substantially parallel to and spaced apart from the assembly axis. The third emitter emits a third beam along a third beam axis that is substantially parallel to and spaced apart from the assembly axis. The first beam axis, the second beam axis and the third beam axis are positioned spaced apart about and substantially equidistant from the assembly axis.Type: ApplicationFiled: November 22, 2011Publication date: May 3, 2012Inventors: Michael Pushkarsky, David F. Arnone, Matt Barre, David P. Caffey, Salvatore F. Crivello, Timothy Day, Kyle Thomas
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Publication number: 20120076160Abstract: An external cavity laser assembly (10) that generates a light beam (12) includes a gain medium (14) and a diffraction grating (24). The gain medium (14) has a growth direction (14C), a fast axis (14A), a first facet (34A), and a second facet (34B) that is spaced apart from the first facet (34A). The gain medium (14) emits from both facets (34A) (34B). Further, a beam polarization (30) of the light beam (32) emitting from the second facet (34B) is perpendicular to the growth direction (14C) and the fast axis (14A). The grating (24) includes a plurality of grating ridges (24A) that are oriented parallel to the beam polarization (30). Moreover, each of the grating ridges (24A) can have a substantially rectangular shaped cross-sectional profile.Type: ApplicationFiled: September 20, 2011Publication date: March 29, 2012Inventors: David P. Caffey, Michael Radunsky, Edeline Fotheringham, Michael Pushkarsky
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Publication number: 20120068001Abstract: A laser source assembly (210) for generating an assembly output beam (212) includes a first laser source (218A), a second laser source (218B), and a dispersive beam combiner (222). The first laser source (218A) emits a first beam (220A) having a first center wavelength, and the second laser source (218B) emits a second beam (220B) having a second center wavelength that is different than the first center wavelength. The dispersive beam combiner (222) includes a common area 224 that combines the first beam (220A) and the second beam (220B) to provide the assembly output beam (212). The first beam (220A) impinges on the common area (224) at a first beam angle (226A), and the second beam (220B) impinges on the common area (224) at a second beam angle (226B) that is different than the first beam angle (226A). Further, the beams (220A) (220B) that exit from the dispersive beam combiner (222) are substantially coaxial, are fully overlapping, and are co-propagating.Type: ApplicationFiled: July 6, 2011Publication date: March 22, 2012Inventors: Michael Pushkarsky, David F. Arnone
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Publication number: 20120057254Abstract: A beam director (360) for directing a beam (356, 358) comprises a director base (464), a reflective element (462), a base pivot (474A), an element pivot (470), and a first element fastener (468A). The director base (464) is positioned adjacent to a mounting base (226). A first interface between the director base (464) and the mounting base (226) is in a first interface plane that is orthogonal to a first axis. The base pivot (474A) provides a base pivot axis for selectively rotating the director base (464) and the reflective element (462) relative to the mounting base (226) about the first axis. The element pivot (470) guides the rotation of the reflective element (462) relative to the director base (464) about a second axis that is orthogonal to the first axis. The first element fastener (468A) is selectively movable between a locked position and an unlocked position to selectively inhibit rotation of the reflective element (462) relative to the director base (464) about the second axis.Type: ApplicationFiled: August 30, 2011Publication date: March 8, 2012Applicant: Daylight Solutions, Inc.Inventors: David F. Arnone, Ken Wallace, Michael Pushkarsky, Jason Sensibaugh, Bradley Charles Steele, Brian Jacob Long, Mark R. Lewis, Gregory Hunt Gates
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Publication number: 20120057366Abstract: An optical fiber switch (16) for alternatively redirecting an input beam (14) comprises a redirector (18) and a redirector mover (20). The redirector (18) redirects the input beam (14) so that a redirected beam (46) alternatively launches from the redirector (18) (i) along a first redirected axis (354) that is spaced apart from a directed axis (344A) when the redirector (18) is positioned at a first position (348), and (ii) along a second redirected axis (356) that is spaced apart from the directed axis (344A) when the redirector (18) is positioned at a second position (350) that is different from the first position (348). The redirector mover (20) moves the redirector (18) about a movement axis (366) between the first position (348) and the second position (350).Type: ApplicationFiled: October 6, 2011Publication date: March 8, 2012Inventors: Alexander Dromaretsky, Michael Pushkarsky, Brandon Borgardt
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Publication number: 20110158270Abstract: Methods and apparatus for broad tuning of single wavelength quantum cascade lasers and the use of light output from such lasers for highly sensitive detection of trace gases such as nitrogen dioxide, acetylene, and vapors of explosives such as trinitrotoluene (TNT) and triacetone triperoxide (TATP) and TATP's precursors including acetone and hydrogen peroxide. These methods and apparatus are also suitable for high sensitivity high selectivity detection of other chemical compounds including chemical warfare agents and toxic industrial chemicals. A quantum cascade laser (QCL) system that better achieves single mode, continuous, mode-hop free tuning for use in L-PAS (laser photoacoustic spectroscopy) by independently coordinating gain chip current, diffraction grating angle and external cavity length is described. An all mechanical method that achieves similar performance is also described. Additionally, methods for improving the sensor performance by critical selection of wavelengths are presented.Type: ApplicationFiled: March 7, 2011Publication date: June 30, 2011Inventors: C. Kumar N. Patel, Ilya Dunayevskiy, Manu Prasanna, Rowel C. Go, Alexei Tsekoun, Michael Pushkarsky, Richard Maulini
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Publication number: 20110103416Abstract: Methods and apparatus for broad tuning of single wavelength quantum cascade lasers and the use of light output from such lasers for highly sensitive detection of trace gases such as nitrogen dioxide, acetylene, and vapors of explosives such as trinitrotoluene (TNT) and triacetone triperoxide (TATP) and TATP's precursors including acetone and hydrogen peroxide. These methods and apparatus are also suitable for high sensitivity, high selectivity detection of other chemical compounds including chemical warfare agents and toxic industrial chemicals. A quantum cascade laser (QCL) system that better achieves single mode, continuous, mode-hop free tuning for use in L-PAS (laser photoacoustic spectroscopy) by independently coordinating gain chip current, diffraction grating angle and external cavity length is described. An all mechanical method that achieves similar performance is also described. Additionally, methods for improving the sensor performance by critical selection of wavelengths are presented.Type: ApplicationFiled: November 1, 2010Publication date: May 5, 2011Inventors: C. Kumar N. Patel, Ilya Dunayevskiy, Manu Prasanna, Rowel C. Go, Alexei Tsekoun, Michael Pushkarsky, Richard Maulini
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Publication number: 20110102788Abstract: Methods and apparatus for broad tuning of single wavelength quantum cascade lasers and the use of light output from such lasers for highly sensitive detection of trace gases such as nitrogen dioxide, acetylene, and vapors of explosives such as trinitrotoluene (TNT) and triacetone triperoxide (TATP) and TATP's precursors including acetone and hydrogen peroxide. These methods and apparatus are also suitable for high sensitivity, high selectivity detection of other chemical compounds including chemical warfare agents and toxic industrial chemicals. A quantum cascade laser (QCL) system that better achieves single mode, continuous, mode-hop free tuning for use in L-PAS (laser photoacoustic spectroscopy) by independently coordinating gain chip current, diffraction grating angle and external cavity length is described. An all mechanical method that achieves similar performance is also described. Additionally, methods for improving the sensor performance by critical selection of wavelengths are presented.Type: ApplicationFiled: November 1, 2010Publication date: May 5, 2011Inventors: C. Kumar N. Patel, IIya Dunayevskiy, Manu Prasanna, Rowel C. Go, Alexei Tsekoun, Michael Pushkarsky, Richard Maulini
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Publication number: 20110103412Abstract: Methods and apparatus for broad tuning of single wavelength quantum cascade lasers and the use of light output from such lasers for highly sensitive detection of trace gases such as nitrogen dioxide, acetylene, and vapors of explosives such as trinitrotoluene (TNT) and triacetone triperoxide (TATP) and TATP's precursors including acetone and hydrogen peroxide. These methods and apparatus are also suitable for high sensitivity, high selectivity detection of other chemical compounds including chemical warfare agents and toxic industrial chemicals. A quantum cascade laser (QCL) system that better achieves single mode, continuous, mode-hop free tuning for use in L-PAS (laser photoacoustic spectroscopy) by independently coordinating gain chip current, diffraction grating angle and external cavity length is described. An all mechanical method that achieves similar performance is also described. Additionally, methods for improving the sensor performance by critical selection of wavelengths are presented.Type: ApplicationFiled: November 1, 2010Publication date: May 5, 2011Inventors: C. Kumar N. Patel, Ilya Dunayevskiy, Manu Prasanna, Rowel C. Go, Alexei Tsekoun, Michael Pushkarsky, Richard Maulini