Holographic reflective Bragg gratings of gain and their role in the operation of high-power pulsed lasers
Authors:
- A.P. PogodaAPA.P. Pogoda
- A.A. SergeevASA.A. Sergeev
- I.S. KhakhalinIKI.S. Khakhalin
- E.E. PopovEPE.E. Popov
- N.L. IstominaNIN.L. Istomina
- A.S. BoreishoABA.S. Boreisho
- V.M. PetrovVPV.M. Petrov
- 1 July 2020
- journal article
- research article
- Published by IOP Publishing in Quantum Electronics
- Vol. 50 (7) , 658-661
Abstract
The influence of reflective Bragg gratings that are formed in an active medium due to the spatial periodic modulation of gain on the spectral properties of lasing are investigated by an example of a pulsed Nd : YAG laser. It is shown that, at a certain choice of the formation regime of reflective gratings of gain, the lasing bandwidth can be reduced by a factor of 3 – 5, with a corresponding increase in the pulse energy and significant improvement of spatial beam quality.Keywords
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