This article is cited in 27 papers

Extreme light fields and their applications

Calculation of the gain coefficient in cryogenically cooled Yb : YAG disks at high heat generation rates

O. L. Vadimova, I. B. Mukhin, I. I. Kuznetsov, O. V. Palashov, E. A. Perevezentsev, E. A. Khazanov

Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod

Abstract: We have calculated the stored energy and gain coefficient in disk gain elements cooled to cryogenic temperatures. The problem has been solved with allowance for intense heat generation, amplified spontaneous emission and parasitic lasing, without averaging over any spatial coordinate. The numerical simulation results agree well with experimental data, in particular at high heat generation rates. Experimental data and theoretical analysis indicate that composite disk gain elements containing an undoped region can store considerably more energy due to suppression of amplified spontaneous emission and parasitic lasing.

Keywords: pulsed laser, disk laser, amplified spontaneous emission, Yb : YAG, cryogenic cooling.

PACS: 42.55.Rz, 42.60.By, 42.60.Lh

Received: 24.10.2012
Revised: 29.11.2012

 English version: Quantum Electronics, 2013, 43:3, 201–206

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