Abstract

We report what is believed to be the first observation of phase conjugation by stimulated Brillouin scattering (SBS) in ${\mathrm{TeO}}_2$ single crystal. The observed very low threshold for phase-conjugate mirror (PCM) formation, high PCM reflectivities in this initial experiment, and commercial availability of material hold promise for a host of practical applications in the near future. The resultant steady-state gain parameter, $\sim 100 \mathrm{cm}/\mathrm{GW}$, is to our knowledge the largest ever reported for any SBS material.

© 2004 Optical Society of America

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