Mitsubishi Materials Corporation

Noriko Watanabe

Genta Masada

Hiroyuki Shiraishi

Yasuhiro Hanaue

Ryuichi Komatsu

Ichiro Sekine

Tamotsu Sugawara

Hirokazu Kato

Tsuyoshi Kajitani

Yasuhiro Ono

In an optical wavelength converting method in which light from a laser oscillator that oscillates coherent light of an inherent wavelength &#x3bb; is employed as incident light, and is made to input to a nonlinear optical crystal, and light having a wavelength of&#x3bb; is radiated, the wavelength of the incident light isnm or less, and the peak power density of the incident light is 0.1&#x2013;10 fold greater than the peak power density that provides the maximum conversion efficiency. The nonlinear optical crystal is heated to and maintained at 200&#x2013;600&#xb0; C. Prescribed fundamental waves are input to a first crystal and a second crystal sequentially. The first crystal has a higher bulk damage threshold value with respect to the fundamental waves than that of the second crystal. The second crystal has a higher effective nonlinear constant with respect to the fundamental waves than that of the first crystal.

Optical wavelength conversion method, optical wavelength conversion system, program and medium, and laser oscillation system

A borate single crystal which can stably perform light wavelength conversion with high efficiency down to the ultraviolet region is represented by the chemical formula (A O).(B O ) , and is an orthorhombic crystal belonging to the P2   space group, wherein A includes two elements selected from the group consisting of Li, Na, K, Rb, and Cs, and 1.5<x<2.5.

Borate crystal, growth method of the same and laser equipment using the same

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Ibaraki-ken, Japan

Noriko Watanabe