Cover slip external cavity diode laser

Details Cover slip external cavity diode laser Cover slip external cavity diode laser

2007-07-31

arxiv.org/abs/0708.0014v2

Physics

Optics

7 pages, 6 figures, submitted to Review of Scientific Instruments 7/29/07

Scientific paper

10.1063/1.2801006

The design of a 671 nm diode laser with a mode-hop-free tuning range of 40 GHz is described. This long tuning range is achieved by simultaneously ramping the external cavity length with the laser injection current. The external cavity consists of a microscope cover slip mounted on piezoelectric actuators. In such a configuration the laser output pointing remains fixed, independent of its frequency. Using a diode with an output power of 5-7 mW, the laser linewidth was found to be smaller than 30 MHz. This cover slip cavity and feedforward laser current control system is simple, economical, robust, and easy to use for spectroscopy, as we demonstrate with lithium vapor and lithium atom beam experiments.

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