Ring laser cavities

Details Ring laser cavities Ring laser cavities

1988-09-16

1990-02-27

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Folded cavity

372108, 372 98, 372 19, H01S 3083

Patent

active

049052527

ABSTRACT:
Diffraction limited, single narrow lobe radiation from a large area laser is achieved in a system using an external ring laser cavity to return radiation to the laser via a spatial filter and a Faraday rotator. An antireflectance coating of sufficiently small reflectivity added to the large area laser converts it into a laser amplifier which provides optical gain in a ring laser cavity.

REFERENCES:
patent: 4255717 (1981-03-01), Scrifres et al.
patent: 4686485 (1987-08-01), Goldberg et al.
patent: 4751711 (1988-06-01), Welch et al.
L. Goldberg et al. "Injection Locking and Single-Mode Fiber Coupling of a -Element Laser Diode Array", Appl. Phys. Lett. 50 (24), 15 Jun. 1987, pp. 1713-1715.
L. Goldberg et al. "Single Lobe Operation of a 40-Element Laser Array in an External Ring Laser Cavity", Appl. Phys. Lett. 51 (12), 21 Sep. 1987, pp. 871-873.
D. F. Welch et al. "Single-Lobe `Y` Coupled Laser Diode Arrays", Electronics Letters, 12th Mar. 1987, vol. 23, No. 6, pp. 270-272.
C. J. Chang-Hasnain et al., "High Power With High Efficiency in a Narrow Single-Lobed Beam From a Diode Laser Array in an External Cavity", Appl. Phys. Lett. 50 (21), 25 May 1987, pp. 1465-1467.

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