Self-Pumped Phase Conjugation in InP:Fe.

We report here for the first time the demonstration of self- pumped phase conjugation in photoefractive semiconductors using 1.32micron light. Using an AC field technique to enhance the gain coefficient in InP:Fe and a single input pump beam, phase conjugate reflectivities of 11% were measured using an input beam intensity of less than 1mw/mm sup 2. These results open up many possibilities for using photorefractive semiconductors in applications with low power infrared diode lasers.