Abstract: An optical device includes a stack that includes a first curved optical element stacked with a second curved optical element. The second curved optical element propagates light by total internal reflection. The stack also includes an incoupling diffractive grating that incouples the light into the second optical element and an outcoupling diffractive grating optically coupled to the incoupling diffractive grating through the second curved optical element. The outcoupling diffractive grating directs the light. The first curved optical element has a first refractive index, the second curved optical element has a second refractive index, and the first refractive index is different from the second refractive index by approximately 0.15 to 1.2.

Abstract: An optical device includes a stack that includes a first curved optical element stacked with a second curved optical element. The second curved optical element propagates light by total internal reflection. The stack also includes an incoupling diffractive grating that incouples the light into the second optical element and an outcoupling diffractive grating optically coupled to the incoupling diffractive grating through the second curved optical element. The outcoupling diffractive grating directs the light. The first curved optical element has a first refractive index, the second curved optical element has a second refractive index, and the first refractive index is different from the second refractive index by approximately 0.15 to 1.2.

Abstract: An optical device includes a stack that includes a first curved optical element stacked with a second curved optical element. The second curved optical element propagates light by total internal reflection. The stack also includes an incoupling diffractive grating that incouples the light into the second optical element and an outcoupling diffractive grating optically coupled to the incoupling diffractive grating through the second curved optical element. The outcoupling diffractive grating directs the light. The first curved optical element has a first refractive index, the second curved optical element has a second refractive index, and the first refractive index is different from the second refractive index by approximately 0.15 to 1.2.

Abstract: A therapeutic illumination assembly includes a catheter and a point source treatment fiber. The catheter comprises a catheter wall encircling a luminal fluid pathway. The point source treatment fiber is positioned within the luminal fluid pathway of the catheter. Further, the point source treatment fiber comprises a plurality of light emitting point sources intermittently positioned along a treatment length of the point source treatment fiber such that the plurality of light emitting point sources irradiate the catheter when the plurality of light emitting point sources emit light.

Abstract: Radiation shielding glass articles with thin glass faceplates that improve transmission are disclosed. A radiation shielding glass article includes a radiation shielding glass having a first surface and an opposing second surface; and a first thin glass faceplate having a first surface and an opposing second surface, wherein one of said first surface or second surface of said first thin glass faceplate faces the first surface of the radiation shielding glass, wherein the first thin glass faceplate having a thickness of less than or equal to 1.0 mm is bonded to the first surface of the radiation shielding glass, and wherein the first thin glass faceplate is one of an alkaline boro-aluminosilicate glass, or a chemically strengthenable sodium aluminum silicate glass.

Abstract: A method for processing a transparent workpiece includes generating a beam of radiation and forming a defect in or on an object. The beam is a quasi-non-diffracting beam and has a focal volume. Forming the defect includes directing the beam onto the object and positioning the focal volume partially or fully within the object. Generating the beam includes partially blocking the beam upstream of the focal volume to adjust an axial symmetry of the freeform energy distribution with respect to an optical axis of the beam using an adjustable blocking element and/or spatially modulating a phase of the beam upstream of the focal volume to adjust a geometry of the freeform energy distribution using a phase mask. The freeform energy distribution has energy sufficient to induce multi-photon absorption in a region of the object that is co-located with the focal volume. The induced multi-photon absorption produces the defect.

Abstract: A glass wafer having a first major surface, a second major surface that is parallel to and opposite of the first major surface, a thickness between the first major surface and the second major surface, and an annular edge portion that extends from an outermost diameter of the glass wafer toward the geometrical center of the glass wafer. The glass wafer has a diameter from greater than or equal to 175 mm to less than or equal to 325 mm and a thickness of less than 0.350 mm. A width of the edge portion is less than 10 mm.

Abstract: An optical device includes a stack that includes a first curved optical element stacked with a second curved optical element. The second curved optical element propagates light by total internal reflection. The stack also includes an incoupling diffractive grating that incouples the light into the second optical element and an outcoupling diffractive grating optically coupled to the incoupling diffractive grating through the second curved optical element. The outcoupling diffractive grating directs the light. The first curved optical element has a first refractive index, the second curved optical element has a second refractive index, and the first refractive index is different from the second refractive index by approximately 0.15 to 1.2.

Abstract: A method for processing a transparent workpiece includes generating a beam of radiation and forming a defect in or on an object. The beam is a quasi-non-diffracting beam and has a focal volume. Forming the defect includes directing the beam onto the object and positioning the focal volume partially or fully within the object. Generating the beam includes partially blocking the beam upstream of the focal volume to adjust an axial symmetry of the freeform energy distribution with respect to an optical axis of the beam using an adjustable blocking element and/or spatially modulating a phase of the beam upstream of the focal volume to adjust a geometry of the freeform energy distribution using a phase mask. The freeform energy distribution has energy sufficient to induce multi-photon absorption in a region of the object that is co-located with the focal volume. The induced multi-photon absorption produces the defect.

Abstract: A therapeutic illumination assembly includes a catheter and a point source treatment fiber. The catheter comprises a catheter wall encircling a luminal fluid pathway. The point source treatment fiber is positioned within the luminal fluid pathway of the catheter. Further, the point source treatment fiber comprises a plurality of light emitting point sources intermittently positioned along a treatment length of the point source treatment fiber such that the plurality of light emitting point sources irradiate the catheter when the plurality of light emitting point sources emit light.

Abstract: A therapeutic illumination assembly includes a catheter and a point source treatment fiber. The catheter comprises a catheter wall encircling a luminal fluid pathway. The point source treatment fiber is positioned within the luminal fluid pathway of the catheter. Further, the point source treatment fiber comprises a plurality of light emitting point sources intermittently positioned along a treatment length of the point source treatment fiber such that the plurality of light emitting point sources irradiate the catheter when the plurality of light emitting point sources emit light.

Abstract: A system for cutting a substrate that is transparent within a predetermined range of wavelengths in the electromagnetic spectrum is provided that includes: a laser capable of emitting light along a light path and of a predetermined wavelength that is within the range of wavelengths in which the substrate is transparent; an optical element positioned in the light path of the laser such that the laser in conjunction with the optical element is capable of generating induced nonlinear absorption within at least a portion of the substrate; and an interface block composed of a material that is transparent over at least a portion of the predetermined range of wavelengths in the electromagnetic spectrum in which the substrate is also transparent. The interface block is positioned in the light path and between the substrate and the optical element. Further, the substrate will include an edge when extracted from a sheet.

Abstract: A system for cutting a substrate that is transparent within a predetermined range of wavelengths in the electromagnetic spectrum is provided that includes: a laser capable of emitting light along a light path and of a predetermined wavelength that is within the range of wavelengths in which the substrate is transparent; an optical element positioned in the light path of the laser such that the laser in conjunction with the optical element is capable of generating induced nonlinear absorption within at least a portion of the substrate; and an interface block composed of a material that is transparent over at least a portion of the predetermined range of wavelengths in the electromagnetic spectrum in which the substrate is also transparent. The interface block is positioned in the light path and between the substrate and the optical element. Further, the substrate will include an edge when extracted from a sheet.

Abstract: A spectral imaging system includes a a focal plane array (122). The focal plane array includes a plurality of imaging pixel rows (124), each imaging pixel row of the plurality of imaging pixel rows includes two or more individual imaging pixels, and the plurality of imaging pixel rows include a first imaging pixel row (124a) and a second imaging pixel row (124b). The spectral imager also includes a reference filter (142) optically coupled to the first imaging pixel row of the focal plane array and a multivariate optical element (140) optically coupled to the second imaging pixel row of the focal plane array.

Abstract: A glass wafer having a first major surface, a second major surface that is parallel to and opposite of the first major surface, a thickness between the first major surface and the second major surface, and an annular edge portion that extends from an outermost diameter of the glass wafer toward the geometrical center of the glass wafer. The glass wafer has a diameter from greater than or equal to 175 mm to less than or equal to 325 mm and a thickness of less than 0.350 mm. A width of the edge portion is less than 10 mm.

Abstract: A headphone system includes a first audio speaker assembly and a second audio speaker assembly, a connecting body extending between the first and second audio speaker assemblies, and a light-diffusing fiber coupled with the connecting body, the light-diffusing fiber having a glass core and a cladding. At least one of the glass core and a core-cladding interface includes a plurality of light scattering structures. A light source is optically coupled to the light-diffusing fiber and configured to emit light into the light-diffusing fiber. The light scattering structures are configured to scatter the emitted light and output the emitted light at least partially along a sidewall of the light-diffusing fiber.

Abstract: According to one embodiment, a balloon catheter includes a balloon located at a distal end of the balloon catheter. The balloon includes a first transferrable marking and a second transferrable marking on an exterior surface of the balloon. The first transferrable marking includes a partially IR-transmittable marking material. The second transferrable marking includes an IR-transmittable marking material. An OCT probe including the balloon catheter and a method of using the OCT probe are also disclosed.

Abstract: A therapeutic illumination assembly includes a catheter and a point source treatment fiber. The catheter comprises a catheter wall encircling a luminal fluid pathway. The point source treatment fiber is positioned within the luminal fluid pathway of the catheter. Further, the point source treatment fiber comprises a plurality of light emitting point sources intermittently positioned along a treatment length of the point source treatment fiber such that the plurality of light emitting point sources irradiate the catheter when the plurality of light emitting point sources emit light.

Abstract: The present application describes a system for cutting a substrate (102) that is transparent within a predetermined range of wavelengths in the electromagnetic spectrum and will include an edge when extracted from a sheet of substrate (102). The system generally includes a laser (104) capable of emitting light along a light path and of a predetermined wavelength that is within the range of wavelengths in which the substrate (102) is transparent; an optical device (106) positioned in the light path of the laser; and an interface block (108) composed of a material that is transparent over at least a portion of the predetermined range of wavelengths in the electromagnetic spectrum in which the substrate (102) is also transparent, wherein said interface block (108) is positioned in said light path and between the substrate (102) and said optical element (108).

Abstract: An illuminable transmission cable includes an electrical conductor, a light-diffusing fiber having a glass core and a cladding, at least one of the glass core and a core-cladding interface having a plurality of scattering structures. The light-diffusing fiber is configured to optically couple with a light source which emits light into the light-diffusing fiber. The scattering structures are configured to scatter the emitted light and output the emitted light along at least a portion of a sidewall of the light-diffusing fiber. A light transmissive jacket surrounds the electrical conductor and the light-diffusing fiber.