Investigation of the properties of a laser with an unstable resonator and additional feedback

Anan'ev, Yu. A.; Goryachkin, D. А.; Sventsitskaya, N. A.; Petrova, I. M.

doi:10.1070/qe1979v009n08abeh009408

Cited by 9 publications

(1 citation statement)

References 2 publications

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“…The excitation of the converging wave can be done by the use of an external reflector. This reflector either covers the complete output coupling area and has a partial reflectivity coating [6][7][8][9] (like in Fig. 1a) or it covers only part of the output coupling area and has a high reflectivity coating 7,10 , as *carsten.pargmann@dlr.de; phone +49 6298 28-586; fax +49 6298 28-582; www.dlr.de/tp In the upper picture the ER is covering the complete output area and has a partial reflectivity coating, whereas in the bottom it is covering only a part of the output area and has a high reflectivity coating.…”

Section: Introductionmentioning

confidence: 99%

Unstable resonator with high magnification and low output coupling

et al. 2012

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The application of standard unstable resonators does not allow for an independent adjustment of the resonator magnification and the output coupling. Either you get a high magnification together with a high output coupling, or vice versa. Certain laser types, like e.g. thin-disc lasers or chemical oxygen iodine lasers, permit only quite low optimum output couplings. The corresponding low resonator magnification is equal to a poor beam quality. In order to apply unstable resonators with a high magnification also to low gain media an additional mirror surface retroreflects a part of the out coupled radiation back into the cavity. The output coupling is reduced efficiently, whereas the resonator magnification stays high. Accordingly low gain media can be operated with high power extraction in combination with a good beam quality. Numerical and experimental investigations are shown. The experiments are performed with a chemical oxygen iodine laser operating at a wavelength of 1.315 µm and demonstrate the feasibility of this resonator design.

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Section: Introductionmentioning

confidence: 99%

Unstable resonator with high magnification and low output coupling

et al. 2012

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Divergence of radiation from an electric-discharge CO₂laser having an unstable resonator

Dan'shchikov¹,

Dymshakov²,

Lebedev³

et al. 1982

Sov. J. Quantum Electron.

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Suppression of an opposite wave in pumping a four-wave wavefront-reversing mirror by a CO₂laser with an unstable resonator

Goryachkin¹,

Kalinin²,

Kozlovskaya³

et al. 1986

Sov. J. Quantum Electron.

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Investigation of the properties of a laser with an unstable resonator and additional feedback

Cited by 9 publications

References 2 publications

Unstable resonator with high magnification and low output coupling

Unstable resonator with high magnification and low output coupling

Divergence of radiation from an electric-discharge CO₂laser having an unstable resonator

Suppression of an opposite wave in pumping a four-wave wavefront-reversing mirror by a CO₂laser with an unstable resonator

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Investigation of the properties of a laser with an unstable resonator and additional feedback

Cited by 9 publications

References 2 publications

Unstable resonator with high magnification and low output coupling

Unstable resonator with high magnification and low output coupling

Divergence of radiation from an electric-discharge CO2laser having an unstable resonator

Suppression of an opposite wave in pumping a four-wave wavefront-reversing mirror by a CO2laser with an unstable resonator

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Divergence of radiation from an electric-discharge CO₂laser having an unstable resonator

Suppression of an opposite wave in pumping a four-wave wavefront-reversing mirror by a CO₂laser with an unstable resonator