Coherent light generators – Particular operating compensation means
Patent
1989-05-11
1990-02-06
Sikes, William L.
Coherent light generators
Particular operating compensation means
372 39, H01S 300
Patent
active
048993476
ABSTRACT:
A laser gain medium has a diamond coating in order to strengthen it and reduce parasitic oscillations. The medium can be a slab with chamfered corners with the coating on the edge faces and the corners, or a rod with the coating going all the way around it to eliminate stress corrosion and provide a compressive stress. The medium can be Nd:YAG and the coating can have a parasitic absorbing dopant. In a laser, the length of the coating preferably is the same as the length of the medium. For the slab, siderails can be used with a length slightly shorter than that of the coating.
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patent: 4638484 (1987-01-01), Rand et al.
patent: 4725345 (1988-02-01), Sakamoto et al.
D. C. Brown et al., "Parasitic Oscillations and Amplified Spontaneous Emission in Face-Pumped Total Internal Reflection Lasers," SPIE, vol. 736, pp. 74-83, 1987.
D. C. Brown et al., "Parasitic Oscillations, Absorption, Stored Energy Density and Heat Density in Active-Mirror and Disk Amplifiers," Applied Optics, Jan. 15, 1978, vol. 17, No. 2, pp. 211-224.
Azad Farzin H.
Kuchar Norman R.
Davis Jr. James C.
General Electric Company
Holloway B. R. R.
Sikes William L.
Steckler Henry I.
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