Coherent light generators – Particular operating compensation means
Patent
1995-04-03
1997-06-17
Bovernick, Rodney B.
Coherent light generators
Particular operating compensation means
372105, 372106, H01S 300
Patent
active
056404069
ABSTRACT:
Apparatus, and a related method, for compensating for birefringence introduced in a birefringent medium, such as a solid-state amplifier. The invention includes the combination of a quarter-wave plate, a Faraday rotator and a mirror, which may be a phase conjugation cell. Light passing through the quarter-wave plate is substantially circularly polarized, which is advantageous if the mirror is a phase conjugation cell using stimulated Brillouin scattering (SBS). A second pass through the quarter-wave plate provides a linearly polarized beam of which the polarization angle is orthogonally related to that of the original beam, to facilitate out-coupling of energy from the apparatus. The Faraday rotator effects a total polarization angle rotation of 90.degree. in two passes and helps compensate for birefringence when the beam is passed through the birefringent medium again on the return pass. The combination of the quarter-wave plate and the Faraday rotator provides better birefringence cancellation than either element acting alone.
REFERENCES:
patent: 4872181 (1989-10-01), Johnson et al.
patent: 4918395 (1990-04-01), Difonzo et al.
patent: 4935932 (1990-06-01), Johnson et al.
patent: 4943782 (1990-07-01), Stephens et al.
patent: 4949358 (1990-08-01), Kantorski et al.
patent: 4955725 (1990-09-01), Johnson et al.
patent: 5018163 (1991-05-01), Daunt et al.
patent: 5127019 (1992-06-01), Epstein et al.
patent: 5142548 (1992-08-01), Krasinski et al.
patent: 5199042 (1993-03-01), Papetti et al.
patent: 5247562 (1993-09-01), Steinbach
patent: 5268787 (1993-12-01), McIntire
patent: 5272717 (1993-12-01), Stulz
patent: 5317447 (1994-05-01), Baird et al.
patent: 5321718 (1994-06-01), Waarts et al.
patent: 5325380 (1994-06-01), Clendening et al.
patent: 5351250 (1994-09-01), Scott
patent: 5357359 (1994-10-01), Uchiyama et al.
patent: 5448579 (1995-09-01), Chang et al.
D. Carr & D.C. Hanna, Performance of a Nd:YAG Oscillator/Amplifier with Phase-Conjugation via Stimulated Brillouin Scattering, Appl. Phys. B 36, 83-92 (1985) No Month.
Injeyan Hagop
St. Pierre Randall J.
Bovernick Rodney B.
TRW Inc.
Wise Robert E.
Yatsko Michael S.
LandOfFree
Birefringence compensated laser architecture does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Birefringence compensated laser architecture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Birefringence compensated laser architecture will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2163500