Quasi-monolithic ring resonator for efficient frequency doubling of an external cavity diode laser

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Title Quasi-monolithic ring resonator for efficient frequency doubling of an external cavity diode laser
Author Skoczowsky, D.; Jechow, Andreas; Stürmer, H.; Poßner, T.; Sacher, J.; Menzel, R.
Journal Name Applied Physics B
Year Published 2010
Place of publication Germany
Publisher Springer
Abstract A quasi-monolithic second-harmonic-generation ring resonator assembled with miniaturized components is presented. The ring contains a 10-mm-long bulk periodically poled lithium niobate crystal for second-harmonic generation, four plane mirrors and two gradient-index lenses. All parts are mounted on a glass substrate with an overall size of 19.5 mm×8.5 mm×4 mm. As pump source a broad-area laser diode operated in an external resonator with Littrow arrangement is utilized. This external cavity diode laser provides near diffraction limited, narrow-bandwidth emission with an optical output power of 450 mW at a wavelength of 976 nm. Locking of the diode laser emission to the resonance frequency of the ring cavity was achieved by an optical self-injection locking technique. With this setup more than 126 mW of diffraction-limited blue light at 488 nm could be generated. The opto–optical conversion efficiency was 28% and a wall plug efficiency better than 5.5% could be achieved.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1007/s00340-009-3802-7
Volume 98
Issue Number 4
Page from 751
Page to 757
ISSN 0946-2171
Date Accessioned 2011-02-14
Date Available 2011-02-23T08:57:12Z
Language en_AU
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Lasers and Quantum Electronics; Nonlinear Optics and Spectroscopy
URI http://hdl.handle.net/10072/36534
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1x

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