Optical: systems and elements – Optical frequency converter – Raman type
Patent
1990-11-05
1992-03-24
Davie, James W.
Optical: systems and elements
Optical frequency converter
Raman type
H03F 700
Patent
active
050991477
ABSTRACT:
A Raman converter comprising an input optical pump beam (16) from a laser (18) that propagates through first and second Raman cells (12,24) and causes Stokes shifted waves (14,26) to be generated therein, and a polarizer (34) disposed between the Raman cells (12,24). The polarizer (34) is switchable during laser operation to cause the Stokes shifted waves (14) from the first Raman cell (12) to be circularly or linearly polarized, thereby causing the Stokes shifted waves (26) in the second Raman cell to be generated as rotationally shifted or vibrationally shifted waves respectively. The polarizer (34) may be switched to the selected circular or linear polarization, or may be repeatedly switched therebetween at regular or pseudo-random intervals. A second polarizer (32) may be disposed upstream of the first Raman cell (12) for selectively switching the polarization of the input pump beam (16) during laser operation. The polarizers (32) and (34) may each be used alone or in combination with each other. Combinations of rotational and vibrational Stokes shifted waves generated in the two Raman cells (12,24) provide multi-wavelength optical output signals with variable wavelength distributions.
REFERENCES:
patent: 4784450 (1988-11-01), Jain et al.
patent: 4821272 (1989-04-01), Bruesselbach et al.
Gregor Eduard
Mordaunt David W.
Strahm Katherine V.
Davie James W.
Denson-Low W. K.
Hughes Aircraft Company
Lachman M. E.
Streeter W. J.
LandOfFree
Raman converter with variable wavelength distribution does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Raman converter with variable wavelength distribution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Raman converter with variable wavelength distribution will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2012433