Brillouin amplification of weak Stokes signal from sea water with different salinities and temperatures
RCSLPLT) and 2010 Academic Symposium Optoelectronics Technology（2010）
摘要
A scheme is presented for amplifying weak Stokes signals from sea water with different salinities and temperatures by Brillouin amplification. CS2 whose Brillouin shift is near to that of water's is chosen as amplifier medium. A frequency doubled Nd:YAG laser is used to produce singlemode pulses of 7.2-ns duration. Results show that weak Stokes signals arising from water in the temperature range of 2°C to 40°C and salinity range of 00/00 to 350/00 can be amplified efficiently at room temperature. Signal gains as high as 107 were achieved with input signal energy in the order of pJ in experiment.
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关键词
brillouin amplification,sea water,temperature,signal gain,frequency doubled nd:yag laser,ocean temperatures,salinity,temperature 2 degc to 40 degc,ocean salinities,remote sensing by laser beam,optical radar,ocean temperature,oceanographic techniques,weak stokes signal,brillouin spectra,brillouin shift,seawater,room temperature,noise,brillouin scattering,temperature measurement,laser radar
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