Abstract

Highly coherent tunable light source is an essential tool in applications from basic physical investigation to precision measurement. For this purpose, we have proposed an all diode-laser-based optical frequency sweep generator (OFSG) by using nonlinear frequency conversions to cover the tunable frequency range about 1 PHz from. UR to near IR region,¹ and reported some experimental results towards realization of OFSG.^1,2 Among various frequency conversions, optical parametric amplification (OPA) is an important part for generating tunable output in the near IR region for OFSG. In this paper, we present, for the first time to our knowledge, the experimental result of the cw OPA by using a 15-μm MQW-DFB diode laser and a Ti:sapphire laser in a potassium titanyl phosphate (KTP) crystal, and we propose a scheme for precision frequency tunable source based on our previous experiments.

© 1993 Optical Society of America