Laser cavities with modified Sagnak interferometer: current status

Stanislav G. Rozuvan; Eugene A. Tikhonov

doi:10.1117/12.206483

10 April 1995 Laser cavities with modified Sagnak interferometer: current status

Stanislav G. Rozuvan, Eugene A. Tikhonov

Proceedings Volume 2379, Solid State Lasers and Nonlinear Crystals; (1995) https://doi.org/10.1117/12.206483
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

Long time testing of laser cavities based on modified Sagnak interferometer (MSI) in various lasers exposed their following advantages: lasing on the main transversal mode and suppression of the higher mode lasing; the high energy stability in pulse regime (unstability less then 1%); possibility of tuning the mode-locked pulse duration (from 2 to 100 ps); exactly longitudinal and counter-running 2- beam laser pumping. Effect of higher transversal mode suppression in laser cavity with MSI was qualitatively explained in 'soft rim aperture' terms early. MSI-cavity with the off-centered lens position is one where the 'soft unstability' is appeared to together with the capability to suppress the high order transversal modes. The resulted laser field in the case is nonsteady-state and the transient time is infinite, the phase trajectory may not be described as reproducible one and Gauss beam parameters q are chaotically skipped inside some region on the complex plane. The most interesting result of the beam propagation in MSI analysis is the strong dependence of the transient time to the steady- state field distribution from the lens position relative to the optical center of MSI. The current application of MSI-cavities of the various lasers and their modes of operation are discussed.

Citation Download Citation

Stanislav G. Rozuvan and Eugene A. Tikhonov "Laser cavities with modified Sagnak interferometer: current status", Proc. SPIE 2379, Solid State Lasers and Nonlinear Crystals, (10 April 1995); https://doi.org/10.1117/12.206483

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KEYWORDS

Resonators

Multispectral imaging

Laser resonators

Interferometers

Diffraction

Optical pumping

Pulsed laser operation

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