Ti:sapphire laser intracavity difference-frequency generation of 30 mW cw radiation around 4.5 mu m

Year: 2010

Authors: Galli I., Bartalini S., Borri S., Cancio P., Giusfredi G., Mazzotti D., De Natale P.

Autors Affiliation: Isitituto Nazionale di Ottica (INO)–CNR, Largo Fermi 6, 50125 Firenze FI, Italy, and European Laboratory for Non-linear Spectroscopy (LENS), Via Carrara 1, 50019 Sesto Fiorentino FI, Italy

Abstract: A cw mid-IR coherent source based on difference-frequency generation is designed and characterized. For mid-IR generation, a periodically poled MgO:LiNbO(3) crystal is placed inside a compact Ti:sapphire laser cavity. This provides high-power pump radiation for the nonlinear process. Optical injection by an external-cavity diode laser ensures single-frequency operation of the Ti: sapphire laser, while signal radiation is provided by a fiber-amplified Nd:YAG laser. Mid-IR radiation can be generated with 3850-4540 nm tuning range, narrow linewidth, Cs-standard traceability, and TEM(00) spatial mode. 30 mW power is obtained at 4510 nm. (C) 2010 Optical Society of America

Journal/Review: OPTICS LETTERS

Volume: 35 (21)      Pages from: 3616  to: 3618

More Information: We wish to thank our colleague M. De Rosa for useful discussions about the cavity lock. This work was partially funded by Ente Cassa di Risparmio di Firenze, by Consiglio Nazionale delle Ricerche and the other European research funding agencies participating in the European Science Foundation EUROCORES Program EUROQUAM-CIGMA, and by Regione Toscana through the project Capacita Tecnologica e Operativa della Toscana per l
KeyWords: Coherent sources; Difference-frequency generation; External-cavity diode laser; High-power; Intracavities; MgO:LiNbO; Mid-IR radiation; Narrow-line width; ND : YAG lasers; Nonlinear process; Optical injection; Periodically poled; Signal radiation; Single frequency operation; Spatial modes; TEM; Ti: Sapphire laser; Tuning ranges, Cesium; Pumps; Sapphire, Neodymium lasers
DOI: 10.1364/OL.35.003616

Citations: 41
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