Title

Type I Versus Type Ii Bbo Crystal For Frequency Conversion

Abstract

A general theory for three-wave-mixing valid for both type I and type II is presented. Analytic expressions for the SHG efficiencies are compared with the numerical exact solution. The effects of beam walk-off and spatial profile overlap for various polarizations are included. System parameters such as deff, E-number, F-number and angular sensitivity are calculated for type I and II BBO crystals. The integrated efficiency for divergent pump beam is calculated for various ratio of beam divergence and crystal angular acceptance width. Experimental data for SHG of 1064 nm (YAG-laser) are presented and compared for type I and type II BBO crystal. From our measured data, we conclude that the simple model based upon the ratio of P(laser power) and the beam quality (Q) or inverse-square of the angular sensitivity overestimates the effects of beam quality on the efficiency. A rigorous model including the complicated coupling between P, Q and the efficiency is presented which correctly explains our data. © 1988 SPIE.

Publication Date

6-27-1988

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

895

Number of Pages

162-169

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.944441

Socpus ID

0344821062 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0344821062

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