This article is cited in 1 paper

Lasers

Condensation of the emission spectrum of a wide-band laser in the case of intracavity emission scattering by an aerosol

Yu. P. Podmar'kov, M. P. Frolov

P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow

Abstract: It is found that inserting aerosol in a cavity of a multimode (wide-band) Co:MgF₂ laser can strongly affect its emission spectrum, provided the typical size of aerosol particles is comparable to the laser wavelength (~2 μm). In the presence of aerosol, intensity spikes are formed in the spectrum at the initial lasing stage, which develop in time. At moments of time ~100 μs, condensation of the spectrum was observed, which manifested itself as a sharp (more than two orders of magnitude) narrowing of the laser emission spectrum down to the value determined by the spectral resolution of a spectrograph (not better than 0.04 cm^–1), with an insignificant decrease in the output energy.

PACS: 42.55.Rz, 42.62.Fi, 42.60.Lh

Received: 07.02.2000

 English version: Quantum Electronics, 2000, 30:8, 669–672

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