STIMULATED RAMAN CONVERSION OF RADIATION FROM A YAG: ND LASER WITH WAVELENGTHS OF 1.319, 1.338, AND 1.357 μM IN A BARIUM NITRATE CRYSTAL

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Abstract

We have studied stimulated Raman (SRS) conversion to the first Stokes component of multimode (M2 = 8) radiation from a YAG:Nd laser with lasing wavelengths of 1.319 μm, 1.338 μm, and 1.357 μm in a barium nitrate crystal. We have obtained pulses of converted radiation with energies up to 120 mJ. We have achieved conversion efficiencies greater than 40% for each of the three Raman laser wavelengths of 1.530 μm, 1.556 μm, and 1.582 μm with divergence of the beams of converted radiation close to the diffraction-limited value (M2 < 1.5).

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