公开(公告)号：US06295160B1

公开(公告)日：2001-09-25

申请号：US09250721

申请日：1999-02-16

申请人： Kevin Dapeng Zhang ,  Eli Margalith

发明人： Kevin Dapeng Zhang ,  Eli Margalith

IPC分类号： G02F139

CPC分类号： G02F1/39 ,  G02F2201/17

摘要： An optical parametric oscillator for converting the wavelength of a laser pump beam into a signal wavelength and an idler wavelength. A co-linear double resonance cavity is created with a right angle prism serving as a maximum reflector for both the pump beam as well as the signal and idler beams. A non-linear crystal is positioned within said resonance cavity and is pivoted to tune the oscillator. A pump beam deflector is positioned to deflect the pump beam into the resonance cavity. The deflector preferably is a mirror with a multi-layer coating configured to provide maximum reflection at the wavelength of the pump beam and maximum transmittal of the signal and idler beams over their ranges. The pump beam passes twice through said non-linear crystal and is efficiently converted into said signal and idler beams in said non-linear crystal. The deflector can be placed inside or outside the cavity. In a preferred embodiment the output coupler is an uncoated window.

摘要翻译： 一种用于将激光泵浦光束的波长转换为信号波长和惰性波长的光学参数振荡器。 产生共线双谐振腔，其中直角棱镜用作泵浦光束以及信号和惰轮的最大反射器。 非线性晶体位于所述共振腔内并被枢转以调谐振荡器。 泵浦光束偏转器被定位成将泵浦光束偏转到谐振腔中。 偏转器优选地是具有多层涂层的反射镜，其被配置为在泵浦波长的波长处提供最大反射，并且在其范围上信号和惰轮的最大传输。 泵浦光束通过所述非线性晶体两次，并且有效地转换成所述非线性晶体中的所述信号和惰轮。 偏转器可以放置在腔体的内部或外部。 在优选实施例中，输出耦合器是未涂覆的窗口。