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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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Ultralow-pump-threshold, femtosecond CR31+:LiSrAlF6 laser pumped by a single narrow-stripe AlGaInP laser diode

Valentine, G.J. and Hopkins, J.M. and LozaAlvarez, P. and Kennedy, G.T. and Sibbett, W. and Burns, D. and Valster, A. (1997) Ultralow-pump-threshold, femtosecond CR31+:LiSrAlF6 laser pumped by a single narrow-stripe AlGaInP laser diode. Optics Letters, 22 (21). pp. 1639-1641. ISSN 0146-9592

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Abstract

We report what we believe to be the first demonstration of a Kerr-lens mode-locked Cr31:LiSrAlF6 laser that is pumped by a single narrow-stripe AlGaInP laser diode with a diffraction-limited output beam. A novel low-loss three-mirror laser cavity design is described in which strong, localized Kerr lensing was exploited such that 75-fs-duration pulses were obtained for only 36 mW of incident pump power. This pump power was maintained for 18 h by just three AA batteries as the electrical power source. We have shown that mode locking can be sustained for pump powers as low as 22 mW.