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Efficient continuous optical second-harmonic generation

1966; IEEE Photonics Society; Volume: 2; Issue: 4 Linguagem: Inglês

10.1109/jqe.1966.1073907

1558-1713

Richard Smith,

Laser Design and Applications

Summary form only, as given. Whereas efficencies of greater than 20 percent in optical second-harmonic generation (SHG) have been reported using a Q-switched ruby laser, efficiencies many orders of magnitude smaller are observed in continuous optical (SHG) experiments. In order to achieve reasonable conversion efficiencies at the lower power levels available with continuous lasers, resonance techniques may be used. These techniques involve resonance of the fundamental, the harmonic, or both. Consideration is given to the various resonance schemes, the improvement factor achieved by each technique, and back reaction effects which occur at high conversion efficiencies. Methods of achieving simultaneous resonance of the fundamental and harmonic as well as achieving phase-matching are discussed.