Kenji Kumamoto

Optical transmission device, solid state laser device, and laser beam processing device

Wavelength conversion laser and a machining device using the same

Laser apparatus includes an unstable resonator and a shading means

Solid-state laser oscillator and machining apparatus using the same

Laser with induced light emission and a stable resonator - has screening device for removing that part of beam outside or within resonator which has phase distortion owing to diffraction

Optical transmitter with solid state laser devices using graded index optical fibre

Laser mit Wellenlängenumwandlung und Bearbeitungsvorrichtung mit einem solchen Laser

Laser with wavelength conversion and processing apparatus having such a laser

Wavelength conversion-type laser, especially for machining, has a second harmonic generating crystal which is shorter than a combined frequency generating conversion crystal

Laser mit Wellenlängenumwandlung und Bearbeitungsvorrichtung mit einem solchen Laser Laser with wavelength conversion and processing apparatus having such a laser