Abstract: A solid-state laser device, comprising two or more resonators for outputting laser beams on a same axis, a first light emitter and a second light emitter for entering excitation light to each of the resonators, a photodetector for monitoring which monitors the outputted laser beams, and a control unit for performing constant output control of at least one of the first light emitter and the second light emitter based on a signal from the photodetector for monitoring.

Abstract: A laser oscillation device, comprising optical crystals, wherein a metal or metal family film is formed over the entire surface of the optical crystals at least except openings where excitation lights enter.

Abstract: A solid-state laser device, which comprises a first resonator for projecting a first laser beam and a second resonator for projecting a second laser beam, wherein the first resonator and the second resonator commonly share a part of an optical axis and an output mirror, and which comprises a first light emitting unit for the first resonator, a second light emitting unit for the second resonator, a monitoring means for splitting and monitoring a part of the first laser beam and for splitting and monitoring a part of the second laser beam among the laser beams projected from the output mirror, and a control unit for controlling at least one of the first light emitting unit and the second light emitting unit based on a detection result from the monitoring means.

Abstract: A laser oscillation device, comprising a laser crystal which is an optical crystal for oscillating an incident excitation light to a fundamental wave, a wavelength conversion crystal for second harmonic wave which is an optical crystal for converting the fundamental wave to a second harmonic wave, and a reflection film formed on an exit end surface of the laser crystal or on an incident end surface of the wavelength conversion crystal for second harmonic wave, wherein the reflection film reflects the second harmonic wave, and the second harmonic wave does not pass through the laser crystal.

Abstract: This invention relates to methods of preventing and treating diseases and conditions associated with cellular stress.

Abstract: A laser device, comprising a laser beam emitter having an optical resonator, wherein the optical resonator has a resonator and a reflection mirror, and at least one of a length of the resonator or a curvature of the reflection mirror is determined so as to satisfy condition that a parameter M2 of beam quality of a projected laser beam is within a range of 8?M2?22, where M2=?W·?/? (W is a beam waist of a laser beam; ? is a spreading angle; and ? is a wavelength of the laser beam).

Abstract: A solid-state laser device, comprising a first optical axis and a second optical axis having a commonly used optical axis portion and separated by an optical axis separating means, a first resonator composed on the first optical axis, a second resonator composed on the second optical axis, a first light emitter for allowing an excitation light to enter the first resonator, a second light emitter for allowing an excitation light to enter the second resonator, a wavelength conversion unit provided on the commonly used optical axis portion, and an output mirror provided on an exit side of the wavelength conversion unit, wherein the wavelength conversion unit comprises two or more optical crystals for wavelength conversion, the output mirror has two or more individual output mirrors, and a wavelength of a laser beam to be projected is determined by selection of turning-on or turning-off of the first light emitter and the second light emitter, and also by selection of the optical crystals for wavelength conversion

Abstract: A laser crystal evaluating system, comprising a light emitting source for emitting an excitation light, a laser crystal support base for supporting a laser crystal, a photodetection unit for receiving a laser beam emitted from the laser crystal, a moving device for relatively moving the light emitting source and the laser crystal in parallel to an end surface of the laser crystal, and an arithmetic operation control device for acquiring an amount of relative movement from the moving device and a result of photodetection from the photodetection unit, wherein a position in the end surface of the laser crystal where the excitation light enters is moved by the moving device, and the arithmetic operation control device obtains output distribution within the end surface of the laser crystal based on the incident position of the excitation light and on the result of photodetection.

Abstract: A laser oscillation device, comprising an optical crystal, wherein an end surface of the optical crystal where a laser beam enters is cooled down by a gas.

Abstract: A laser oscillation device, comprising an optical crystal, wherein a heat radiation film with thermal conductivity higher than thermal conductivity of the optical crystal is formed at least on an end surface of the optical crystal where an excitation light enters.

Abstract: A laser device for medical treatment system, comprising at least a plurality of laser beam emitting sources, a laser beam multiplexing means for superimposing the laser beams emitted from the laser beam emitting sources, and a beam mixing means where the laser beams from the laser beam multiplexing means enter.

Abstract: A solid state laser device, comprising a first resonator and a second resonator provided on the same optical axis, a first optical axis of the first resonator, a second optical axis of the second resonator, a first separated optical axis portion being a part of the first optical axis, a second separated optical axis portion being a part of the second optical axis, a common optical axis portion where the first optical axis and the second optical axis are superimposed on each other, a first solid-state laser medium arranged on the separated optical axis portion of the first optical axis, a second solid-state laser medium arranged on the separated optical axis portion of the second optical axis, an optical crystal for wavelength conversion disposed on the common optical axis portion, and a wavelength separating plate for output disposed on one of the separated optical axis portions.

Abstract: A laser system for controlling output of a laser oscillator based on a monitor light obtained by splitting a laser beam, comprising a light emitting means for emitting the laser beam, a luminous flux splitting means disposed on an optical path of the laser beam and reflecting a part of the laser beam as a monitor light, and a photodetecting means for receiving the monitor light, wherein the luminous flux splitting means has a reflection surface of an incident angle so that reflectivity is kept at approximately constant level with respect to the laser beam regardless of condition of polarization of the incident laser beam.

Abstract: A solid-state laser device, comprising a wavelength conversion optical member, wherein the wavelength conversion optical member comprises a laser crystal and a wavelength conversion element cemented together, and a first dielectric reflection film poorly reflective to a fundamental wave and highly reflective to a wavelength conversion light is formed on a cemented surface.

Abstract: This invention relates to methods of preventing and treating diseases and conditions associated with cellular stress. The methods involve administration of an effective amount of a compound of the formula.

Abstract: A solid-state laser device, comprising a first resonator arranged on a first optical axis, a second resonator arranged on a second optical axis, a first light emitter for entering an excitation light to the first resonator, a second light emitter for entering an excitation light to the second resonator, and further comprising a separated optical axis portion serving as a part of the first optical axis, a separated optical axis portion serving as a part of the second optical axis, a common optical axis portion where the first optical axis and the second optical axis are superimposed, a first solid-state laser medium arranged on the separated optical axis portion of the first optical axis, a second solid-state laser medium arranged on the separated optical portion of the second optical axis, and an optical member for wavelength conversion and wavelength switching means arranged on the common optical axis portion, wherein the optical member for wavelength conversion comprises a plurality of optical crystals for

Abstract: A solid-state laser device, comprising a first resonator arranged on a first optical axis, a second resonator arranged on a second optical axis, a first light emitter for entering an excitation light to the first resonator, a second light emitter for entering an excitation light to the second resonator, a common optical axis portion commonly used by the first optical axis and the second optical axis, a wavelength separating plate for separating the first optical axis from the second optical axis so that the common optical axis portion can be commonly used by the optical axes, an output portion provided on the common optical axis portion, a first solid-state laser medium arranged on a separated optical axis of the first optical axis, a second solid-state laser medium arranged on a separated optical axis of the second optical axis, and an optical crystal for wavelength conversion arranged on the common optical axis portion.

Abstract: A solid-state laser device, which comprises a first resonator for projecting a first laser beam and a second resonator for projecting a second laser beam, wherein the first resonator and the second resonator commonly share a part of an optical axis and an output mirror, and which comprises a first light emitting unit for the first resonator, a second light emitting unit for the second resonator, a monitoring means for splitting and monitoring a part of the first laser beam and for splitting and monitoring a part of the second laser beam among the laser beams projected from the output mirror, and a control unit for controlling at least one of the first light emitting unit and the second light emitting unit based on a detection result from the monitoring means.

Abstract: A semiconductor laser device, comprising a laser crystal, a holder for holding the laser crystal, and a filling material with a low melting point interposed between the laser crystal and the holder.

Abstract: A solid-state laser device, comprising two or more resonators for outputting laser beams on a same axis, a first light emitter and a second light emitter for entering excitation light to each of the resonators, a photodetector for monitoring which monitors the outputted laser beams, and a control unit for performing constant output control of at least one of the first light emitter and the second light emitter based on a signal from the photodetector for monitoring.