| 摘要 |
PROBLEM TO BE SOLVED: To complete adjustment of the angle of wavelength converting crystal to the optical axis of a fundamental wave as much as possible. SOLUTION: This wavelength converting crystal unit 30 has a crystal housing 32 in which the wavelength converting crystal 18 is fixed and housed, and 1st and 2nd angle adjustment mechanisms which adjusts the direction of the crystal housing 32 to the optical axis (optical path) of an optical resonator (especially, the angle of the wavelength converting crystal 18) in 1st and 2nd directionsθY andθX based upon a horizontal line and a perpendicular line which pass the center part of the wavelength converting crystal 18 and are orthogonal to each other as axes of rotation. Here, the 1st angle adjusting mechanism is structured between a rotary support part 46 and the crystal housing 32. The 2nd angle adjusting mechanism is structured between a fixed support part 62 and the rotary support part 46. COPYRIGHT: (C)2006,JPO&NCIPI |
