Coherent light generators – Particular resonant cavity – Plural cavities
Patent
1985-07-02
1988-11-08
Davie, James W.
Coherent light generators
Particular resonant cavity
Plural cavities
372 94, 250432R, 21912176, H01S 3082, B23K 900
Patent
active
047837896
ABSTRACT:
Annular lasing apparatus. A plurality of combinations of substantially cylindrical optical components with appropriate laser gain materials are disclosed for generating approximately cylindrical substantially uniform regions of laser radiation suitable for the uniform irradiation of bulk materials for purposes of photochemical processing thereof. Superposition of contributions from the output of two or more laser oscillators having cylindrical optics were also found to provide adequate uniformity in a radiation volume of significant proportions thereby permitting the efficient utilization of laser radiation in a well-characterized irradiation region. Moreover, the use of cylindrical optics permits the radiation volume to be tailored to the particular requirements of the photochemical or photophysical material processing technology.
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patent: 3940711 (1976-02-01), Casperson
patent: 4341730 (1982-07-01), Maier
patent: 4434341 (1984-02-01), Busby
Hanlon et al., "Helros CO.sub.2 Fusion Laser Alignment System", Conference Proceeding of the Society of Photo-Optical Instrumentation Engineers, vol. 179, Adaptive Optical Components II, 1979, pp. 61-66.
"Cylindrical Laser Resonators", J. Opt. Sco. Am. 63, 25 (1973), by L. W. Casperson.
"Properties of a Radial Mode CO.sub.2 Laser", IEEE J. Quant. Electron. 9, 484 (1973), by L. W. Casperson and C. Romero.
An Introduction to Lasers and Their Applications, by W. R. Callen and W. T. Rhodes, Addison-Wesley, Reading, Mass., 1978.
Davie James W.
Epps Georgia Y.
Freund Samuel M.
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