Patent ID: 6414784
Filing Date: 2002-07-02
Classification: G02F

Abstract:
A crystal support device comprising a nonlinear optical crystal, a supporter for said crystal, and a holder that encloses the supporter and includes a temperature control mechanism to control the temperature of the crystal, beam passage components on entering and exiting sides of the crystal,wherein temperature control mechanism comprises means for regulating the temperature of an end of each beam passage component that is furthest from the crystal to a temperature, relative to ambient temperature, at which beam fluctuation will be effectively prevented, wherein said means for regulating controls the temperature of the ends of the beam passage components which are furthest from the crystal temperature in accordance with the relationship T&lE;20+3.5S where T is a difference between the ambient temperature and the temperature of the ends of the beam passage components which are furthest from the crystal, on both the entering and exiting sides of the crystal, and where S is the required maximum beam fluctuation in &mgr;rad.