Laser system with transverse mode selecting output coupler

Details Laser system with transverse mode selecting output coupler Laser system with transverse mode selecting output coupler

1993-09-15

1996-04-09

Ullah, Akm E.

Coherent light generators

Particular resonant cavity

372 99, 372108, 372 19, H01S 308, H01S 3139

Patent

active

055068588

ABSTRACT:
A laser system wherein, in order that a high-output and high-quality single mode of a cross sectional area larger than the beam diameter determined by the construction of a resonator can be obtained stably, although this has heretofore been impossible, there is used a coupling mirror provided with a partial reflection film and an antireflecting film, a laser beam mode is selected using the partial reflection film, a phase difference between laser beam portions caused by a difference in construction between the partial reflection film and the antireflecting film is compensated using a phase difference compensating apparatus, and there is formed an aperture whose diameter is set to a value of not larger than four times the diameter of the partial reflection film.

REFERENCES:
patent: 4903271 (1990-02-01), Yasui et al.
patent: 4942588 (1990-07-01), Yasui et al.
patent: 4964132 (1990-10-01), Fischer
patent: 5058123 (1991-10-01), Yasui et al.

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