Isolated pump in a double pass pump Raman oscillator and optimum

Details Isolated pump in a double pass pump Raman oscillator and optimum Isolated pump in a double pass pump Raman oscillator and optimum

1983-06-27

1986-02-11

Davie, James W.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Multiaperture

372 3, 372 55, 372 70, G02F 135, H01S 330

Patent

active

045700818

ABSTRACT:
A radiation pump recovery system for a double pass pump Raman oscillator is described incorporating a polarizer and quarter waveplate positioned in the optical path of the input pump radiation and functions to separate the reflected pump radiation coming back from the Raman oscillator along the input optical path from said input optical path. In an alternate embodiment the recovery system may include an additional quarter waveplate and mirror to permit unpolarized pump radiation to be separated into two polarizations to drive two Raman oscillators and whereby the reflected pump radiation coming back from the Raman oscillators along the respective input optical paths is separated from said respective input optical path and recombined into a single beam. An alternate embodiment utilizes the rejected pump energy in a Raman amplifier to provide optimal conversion efficiency. The oscillator which may be single pass pump or double pass pump Raman oscillator and amplifier utilize a common Raman active gas in a common housing having windows to provide separate optical paths for the oscillator and amplifier.

REFERENCES:
patent: 4280109 (1981-07-01), Stappaerts

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