A self-Raman, Nd:GdVO4 laser generating 2.5W CW output at 586nm

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Abstract

We report a CW, frequency doubled, Nd:GdVO4 self-Raman laser producing 2.51 W of CW yellow emission with a 12.2 % overall optical (diode-to-yellow) conversion efficiency. This high level of output power is a result of a laser design which minimises thermal loading of the laser crystal, minimises resonator loss at the fundamental and first Stokes wavelength and maximises the collection efficiency of the yellow light generated in the doubling crystal; each of these key design goals were identified in [1]. More specifically, the laser was pumped at 880 nm, as opposed to 808 nm, resulting in a reduced thermal load in the self-Raman laser crystal and enabled the use of higher pump powers. The reduced thermal lens in turn allowed for a longer (20 mm) Nd:GdVO4 crystal to be used, resulting in higher Raman conversion. Resonator losses were kept as low as possible, by using a single “self-Raman” crystal to perform the dual functions of laser gain material and Raman shifting medium [2]. For efficient collection of the yellow emission into a single output beam, an intracavity dichroic mirror was used with the additional benefit of preventing any thermal loading of the laser crystal caused by absorption of yellow light by the laser crystal.
Original languageEnglish
Title of host publicationEuropean Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, CLEO/Europe-EQEC 2009
Place of PublicationPistacaway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-1
Number of pages1
ISBN (Electronic)9781424440801
ISBN (Print)9781424440795
DOIs
Publication statusPublished - 2009
EventCLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference - 2009 - Munich, Germany
Duration: 14 Jun 200919 Jun 2009

Other

OtherCLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference - 2009
CountryGermany
CityMunich
Period14/06/0919/06/09

Bibliographical note

Copyright 2009 IEEE. Reprinted from CLEO Europe-EQEC 2009 : European Conference on Lasers and Electro-Optics 2009, and the European Quantum Electronics Conference : 14-19 June, 2009, Munich, Germany. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Macquarie University’s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

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