Abstract: An apparatus for treating organic tissue includes: (i) a flash lamp defining a bore; (ii) a current source adapted for providing current to the flash lamp and operating at a current density adapted for forming a volume of optically transparent plasma within the bore, where the volume of optically transparent plasma is capable of emitting electromagnetic radiation and allowing the transmission of the electromagnetic radiation through the volume of optically transparent plasma; and (iii) a delivery system adapted for employing at least a portion of the electromagnetic radiation to treat the organic tissue.

Abstract: A device configured to cut hair using laser light includes a handle portion and a shaving portion. The handle portion includes a battery and a laser light source. The laser light source is coupled to and configured to receive power from the battery. The laser light source is also configured to generate laser light having a wavelength selected to target a predetermined chromophore to effectively cut a hair shaft. The shaving portion includes a support and a single fiber optic supported by the support. The fiber optic has a proximal end, a distal end, an outer wall, and a cutting region positioned towards the distal end and extending along a portion of the side wall. The fiber optic is positioned to receive the laser light from the laser light source at the proximal end, conduct the laser light from the proximal end toward the distal end, and emit the light out of the cutting region and toward hair when the cutting region is brought in contact with the hair.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a waveguide. The waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for circulating a fluorescent substance through the waveguide. The fluorescent substance is capable of modulating at least one property of the electromagnetic radiation.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a waveguide. The waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for moving a fluorescent substance through the waveguide. The fluorescent substance includes a fluid base and a fluorescing agent and is capable of modulating at least one property of the electromagnetic radiation. A method is described for removing the fluorescing agent from the fluorescing substance and replacing it with a second, different fluorescing agent.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a waveguide. The waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for circulating a fluorescent substance through the waveguide. The fluorescent substance is capable of modulating at least one property of the electromagnetic radiation.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a waveguide. The waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for circulating a fluorescent substance through the waveguide. The fluorescent substance is capable of modulating at least one property of the electromagnetic radiation.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a waveguide. The waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for moving a fluorescent substance through the waveguide. The fluorescent substance includes a fluid base and a fluorescing agent and is capable of modulating at least one property of the electromagnetic radiation. A method is described for removing the fluorescing agent from the fluorescing substance and replacing it with a second, different fluorescing agent.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a waveguide. The waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for moving a fluorescent substance through the waveguide. The fluorescent substance includes a fluid base and a fluorescing agent and is capable of modulating at least one property of the electromagnetic radiation. A device is provided to remove a fluorescing agent from the fluorescing substance so that more of the same fluorescing agent can be added to clean fluid base.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a waveguide. The waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for circulating a fluorescent substance through the waveguide. The fluorescent substance is capable of modulating at least one property of the electromagnetic radiation.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a waveguide. The waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for circulating a fluorescent substance through the waveguide. The fluorescent substance is capable of modulating at least one property of the electromagnetic radiation.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a nonlinear waveguide. The nonlinear waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for circulating a fluorescent substance through the nonlinear waveguide. The fluorescent substance is capable of modulating at least one property of the electromagnetic radiation.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a waveguide. The waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for moving a fluorescent substance through the waveguide. The fluorescent substance includes a fluid base and a fluorescing agent and is capable of modulating at least one property of the electromagnetic radiation. A device is provided to remove a fluorescing agent from the fluorescing substance so that more of the same fluorescing agent can be added to clean fluid base.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a waveguide. The waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for moving a fluorescent substance through the waveguide. The fluorescent substance includes a fluid base and a fluorescing agent and is capable of modulating at least one property of the electromagnetic radiation. A method is described for removing the fluorescing agent from the fluorescing substance and replacing it with a second, different fluorescing agent.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a nonlinear waveguide. The nonlinear waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for circulating a fluorescent substance through the nonlinear waveguide. The fluorescent substance is capable of modulating at least one property of the electromagnetic radiation.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a nonlinear waveguide. The nonlinear waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for circulating a fluorescent substance through the nonlinear waveguide. The fluorescent substance is capable of modulating at least one property of the electromagnetic radiation.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a nonlinear waveguide. The nonlinear waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for circulating a fluorescent substance through the nonlinear waveguide. The fluorescent substance is capable of modulating at least one property of the electromagnetic radiation.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a nonlinear waveguide. The nonlinear waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for circulating a fluorescent substance through the nonlinear waveguide. The fluorescent substance is capable of modulating at least one property of the electromagnetic radiation.

Abstract: A handpiece can treat biological tissue using electromagnetic radiation, which can be substantially fluorescent light. The handpiece includes a source of electromagnetic radiation and a nonlinear waveguide. The nonlinear waveguide is adjacent the source, receives electromagnetic radiation from the source, and delivers the electromagnetic radiation to the biological tissue. The handpiece also includes a system for circulating a fluorescent substance through the nonlinear waveguide. The fluorescent substance is capable of modulating at least one property of the electromagnetic radiation.

Abstract: An apparatus for treating organic tissue includes: (i) a flash lamp defining a bore; (ii) a current source adapted for providing current to the flash lamp and operating at a current density adapted for forming a volume of optically transparent plasma within the bore, where the volume of optically transparent plasma is capable of emitting electromagnetic radiation and allowing the transmission of the electromagnetic radiation through the volume of optically transparent plasma; and (iii) a delivery system adapted for employing at least a portion of the electromagnetic radiation to treat the organic tissue.

Abstract: An optic includes a first end, a fluorescent material, and a second end. The first end is adapted to transmit a first band of electromagnetic radiation to the fluorescent material. The fluorescent material is adapted to absorb the first band of electromagnetic radiation and emit a second band of electromagnetic radiation. The second end is adapted to contact the biological tissue and deliver the second band of electromagnetic radiation to treat the biological tissue.