ADPと水晶による光高調波

抄録

Harmonic generation utilizing ADP and quartz is mentioned. The spectrogram of 2nd harmo-nics and the emission pattern are photographed and the angular : dependence of harmonic output-is determined.
The asymmetric characteristic of the emission pattern and of the angular dependence of output, curve is attributed to the divergence of focussed laser beam which causes assymmetry in direction, of intensely emitted 2nd harmonics due to the nature of index surfaces of fundamental ordinary rays; and harmonic extraordinary rays. Explicit explanation of the asymmetry of angular dependence; is made by extending the Kleinman's equation.
Next, the wave-forms of fundamental and harmonic pulses are observed and comparison is, made between them by the use of a dual trace CRO for both ADP and quartz.
The two wave-forms do not correspond exactly probably because of the directional nature of; each laser pulse. Simple discussion is developed.