Coherent light generators – Particular beam control device – Mode discrimination
Patent
1992-04-13
1993-09-21
Scott, Jr., Leon
Coherent light generators
Particular beam control device
Mode discrimination
372 92, 372 41, 372 69, 372 93, 372 97, H01S 3098
Patent
active
052475271
ABSTRACT:
A high-power continuous-wave laser resonator (10) is provided, wherein first, second, third, fourth, fifth and sixth mirrors (11-16) form a double-Z optical cavity. A first Ti:Sapphire rod (17) is disposed between the second and third mirrors (12,13) and at the mid-point of the length of the optical cavity, and a second Ti:Sapphire rod (18) is disposed between the fourth and fifth mirrors (14,15) at a quarter-length point in the optical cavity. Each Ti:Sapphire rod (17,18) is pumped by two counter-propagating pump beams from a pair of argon-ion lasers (21-22, 23-24). For narrow band operation, a 3-plate birefringent filter (36) and an etalon (37) are disposed in the optical cavity so that the spectral output of the laser consists of 5 adjacent cavity modes. For increased power, seventy and eighth mirrors (101, 192) are disposed between the first and second mirrors (11, 12) to form a triple-Z optical cavity. A third Ti:Sapphire rod (103) is disposed between the seventh and eighth mirrors (101, 102) at the other quarter-length point in the optical cavity, and is pumped by two counter-propagating pump beams from a third pair of argon-ion lasers (104, 105).
REFERENCES:
patent: 5052017 (1991-09-01), Hobart et al.
patent: 5113408 (1992-05-01), Bihler
patent: 5159602 (1992-10-01), Giordano et al.
G. Erbert et al., "High Power CW Performance from a Ti:Sapphire Laser and a Single-Pass Amplifier", published by Lawrence Livermore National Laboratory in Dec. 1990.
P. A. Schulz and S. R. Henion, "Liquid-Nitrogen-Cooled Ti:Al.sub.2 O.sub.3 Laser", Published by Massachusetts Institute of Technology, 1990.
I. L. Bass et al., "Ti:Sapphire Laser Above 15 W CW with Line Narrowing", Presented at Tunable Solid State Lasers topical meeting, North Falmouth, Mass., May 1989.
S. R. Henion and P. A. Schulz, "Efficient, High-Average-Power, Liquid-Nitrogen-Cooled Ti:Al.sub.2 O.sub.3 Laser", Presented at Tunable State Lasers topical meeting, North Falmouth, Mass., May 1989.
Bass Isaac L.
Erbert Gaylen V.
Hackel Richard P.
Jenkins Sherman L.
Kanz Vernon K.
Gaither Roger S.
Jr. Leon Scott
Moser William R.
The United States of America as represented by the United States
Valdes Miguel A.
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