Diode-pumped Nd:YAG amplifier with 52-dB gain

Thomas J. Kane; Emily A. P. Cheng; Bao Nguyen

doi:10.1117/12.207410

20 April 1995 Diode-pumped Nd:YAG amplifier with 52-dB gain

Thomas J. Kane, Emily A. P. Cheng, Bao Nguyen

Proceedings Volume 2381, Free-Space Laser Communication Technologies VII; (1995) https://doi.org/10.1117/12.207410
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

We have built a diode-pumped Nd:YAG optical amplifier with 52 dB small-signal gain and 1.125 Watts cw extractable power as gain approaches 0 dB. The amplifier is compact (15 cm X 10 cm X 5 cm). Two 2-Watt laser diodes provide the pump power for the amplifier. Gain is at the wavelength of 1.064 micrometers . We have modulated the output of an Nd:YAG diode-pumped cw oscillator with a waveguide modulator and amplified the modulated output. With an M equals 4 PPM modulation, the transmitted pulse power was 1.8 Watts increasing to 6.5 Watts at M equals 64. A greater increase would be possible if the modulator had a better contrast ratio. For pulse rates greater than 200 kHz inter-symbol interference was not a problem.

Citation Download Citation

Thomas J. Kane, Emily A. P. Cheng, and Bao Nguyen "Diode-pumped Nd:YAG amplifier with 52-dB gain", Proc. SPIE 2381, Free-Space Laser Communication Technologies VII, (20 April 1995); https://doi.org/10.1117/12.207410

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