Aberration sensitivity of unstable resonator with semitransparent output coupler
- P.N. Lebedev`s Physical Inst., Samara (Russian Federation)
Unstable resonator with semitransparent output coupler is feasible for lasers with moderate gain and large cross section of active medium. The resonator fundamental mode can be obtained up to Fresnel numbers of 10 or more. Output beam quality does not differ much from the Gaussian beam, but at the same time intensity distribution is rather flat and mode-medium coupling is better. This approach does not require the mirrors with tapered reflectivity profile. In practice the design of this type of resonator often requires to place a spherical mirror inside to fold the optical path and that inevitably causes astigmatism. Current presentation describes the results of the investigation of resonator sensitivity to intracavity astigmatism. The requirements for the resonator setup to obtain nearly unperturbed fundamental mode operation, and a convenient resonator design to meet this requirements are discussed.
- OSTI ID:
- 55453
- Report Number(s):
- CONF-940142-; ISBN 0-8194-1410-7; TRN: IM9525%%126
- Resource Relation:
- Conference: OE/LASE `94: conference on optics, electro-optics, and laser applications in science and engineering, Los Angeles, CA (United States), 22-29 Jan 1994; Other Information: PBD: 1994; Related Information: Is Part Of Modeling and simulation of laser systems III. SPIE Volume 2117; Schnurr, A.D. [ed.]; PB: 231 p.
- Country of Publication:
- United States
- Language:
- English
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