A moisture sensitive optically nonlinear crystal is enclosed in a hermetically sealed elongated vacuum cell. The vacuum cell has an input window at one end and an output window at an opposite end providing optical access to the crystal by a laser beam. The windows are attached to the cell by cold-formed, indium-metal ram-seals. In an example of the cell in which the crystal is arranged to generate UV radiation from the laser beam, the output window is located at a sufficient distance from the crystal that the flux of UV radiation incident on the output window is below the damage threshold of the window for the UV radiation.
申请公布号
WO2007149214(A2)
申请公布日期
2007.12.27
申请号
WO2007US13222
申请日期
2007.06.05
申请人
COHERENT, INC.;GHORBANI, ARASH;FRANK, PETER;EDMOND, R., IAN