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Multipass diode-pumped Nd:YAG optical amplifiers at 1.06 /spl mu/m and 1.32 /spl mu/m

1994; Institute of Electrical and Electronics Engineers; Volume: 6; Issue: 5 Linguagem: Inglês

10.1109/68.285555

1941-0174

T.E. Olson, Thomas J. Kane, William M. Grossman, Henry Plaessmann,

Photorefractive and Nonlinear Optics

We have built two versions of a diode-pumped Nd:YAG amplifier using a compact multipass confocal geometry with a fiber-coupled input. This confocal geometry provided efficient power and high gain in a volume of approximately 100 cm 3 . When pumped with a commercially mature 2 W 809 nm laser diode, the 1.06 μm version produced 460 mW and a small signal gain of 51 dB. The 1.32 μm version produced 170 mW and a small signal gain of 29 dB. Such an efficient amplifier, especially at 1.32 μm would be useful as a power booster in fiber optic telecommunications.