Raman shifting device

Details Raman shifting device Raman shifting device

1989-09-11

1991-10-15

Sikes, William L.

Coherent light generators

Raman laser

359327, H01S 330

Patent

active

050581171

ABSTRACT:
The invention relates to a Raman converter of improved design, which does not require an exact alignment of the optical elements. There is provided is backward Raman converter which comprises a Raman medium which converts a laser radiation of a given wavelength to a different wavelength by Raman scattering, which comprises a dichroic coupler positioned between a pump laser at the one side of the Raman medium, directing the laser beam into the Raman medium, reflective means being positioned on the second side of the Raman medium, which reflects the Raman-shifted radiation back into the Raman medium, wherein the radiation is amplified by the interaction with the Raman medium and with the incoming pump laser beam. The amplified Raman shifted beam is coupled out of the system by means of the dichroic coupler.

REFERENCES:
patent: 4618783 (1986-10-01), Pradere et al.
patent: 4628513 (1986-12-01), White
patent: 4633103 (1986-12-01), Hyman et al.
patent: 4685107 (1987-08-01), Kafka et al.
patent: 4751714 (1988-06-01), Chen
patent: 4829528 (1989-05-01), Band et al.

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