This article is cited in 28 papers

ATOMS, SPECTRA, RADIATIONS

Lasers on cholesteric liquid crystals: mode density and lasing threshold

L. M. Blinov<sup>ab

a</sup> Institute of Cristallography RAS
^b LICRYL-CEMIF.CAL, Physics Department, University of Calabria, I-87036, Rende (Cs), Italyv

Abstract: The density of states approach [J. Bendickson et al., Phys. Rev. E 53, 4107 (1996)] was applied to a simple dielectric plate and a formula was found for the spectrum of the threshold gain for lasing. Then the validity of the same approach was verified for cholesteric liquid crystals (CLC) having helical structure. For non-absorbing CLC, the dependences were found of the minimum threshold gain on the layer thickness and the optical anisotropy of the material. The contribution of the dye absorption was discussed separately. The experimental data presented are in good agreement with threshold gain calculations.

PACS: 42.60.Da, 42.70.Df, 42.70.-a

Received: 02.06.2009

Language: English

 English version: Journal of Experimental and Theoretical Physics Letters, 2009, 90:3, 166–171

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