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Proceedings Paper

High-frequency tuning of high-powered DFB MOPA system with diffraction limited power up to 1.5W
Author(s): Joachim Sacher; Richard Knispel; Sandra Stry
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Paper Abstract

The combination of high power, small linewidth and fast tunability is essential for many fields in high resolution spectroscopy. External cavity laser diode systems are limited in tuning speed to several kHz by the resonance frequency of the mechanical assembly together with the actuator. We report on the application of a directly modulated DFB laser as master laser within a master laser power amplifier (MOPA) configuration. This DFB MOPA system combines fast frequency tuning up to more then 100kHz tuning speed, a tuning amplitude of more than 10GHz, a narrow linewidth below 5MHz with high output power of 1500mW and an almost Gaussian shaped beam quality (M2<1.2). The coupling efficiency to optical waveguides as well as single mode fibers exceeds 60%. This concept can be realized within the wavelength regime between 730 and 1060nm. We approved this light source for high resolution spectroscopy by frequency locking to the saturated Rubidium absorption at 780nm. Applying two DFB lasers as master lasers of the MOPA configuration opens the choice to high frequency modulated THz radiation.

Paper Details

Date Published: 22 February 2006
PDF: 10 pages
Proc. SPIE 6133, Novel In-Plane Semiconductor Lasers V, 613319 (22 February 2006); doi: 10.1117/12.646367
Show Author Affiliations
Joachim Sacher, Sacher Lasertechnik GmbH (Germany)
Richard Knispel, Sacher Lasertechnik GmbH (Germany)
Sandra Stry, Sacher Lasertechnik GmbH (Germany)

Published in SPIE Proceedings Vol. 6133:
Novel In-Plane Semiconductor Lasers V
Carmen Mermelstein; David P. Bour, Editor(s)

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