Intracavity harmonic generation using layered nonlinear optics

The present invention proposes the use of specially designed layered nonlinear optical devices (LNOs) for intra-cavity harmonic generation. The LNO generates harmonics and directs the generated harmonic beam to a path different from the fundamental beam path by total internal reflection, which means that all light is reflected when light in one ("internal") optical device is sufficiently obliquely incident on the interface of a second ("external") optical device having a lower refractive index than the internal optical device. Harmonic waves in a fundamental wave beam laser cavity do not need to be coated. The generated harmonic beam does not propagate through any surface within the fundamental beam cavity. Therefore, the reliability of the intra-cavity harmonic generation laser is improved, especially when the harmonic is in the ultraviolet range. 本发明提出针对腔内谐波产生使用专门设计的分层非线性光学器件(LNO)。LNO产生谐波并通过全内反射将产生的谐波光束引导至与基波光束路径不同的路径，全内反射现象是指，当一个("内部")光学器件中的光充分倾斜地射到折射率低于内部光学器件的第二个("外部")光学器件的界面时，所有光都被反射。基波光束激光腔内的谐波不需要镀膜。产生的