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Continuous wave, 30 W laser-diode bar with 10 GHz linewidth for Rb laser pumping

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Abstract

A laser-diode bar incorporated into an external cavity with a volume Bragg mirror produced 30W of cw output power within a 20pm (10GHz) spectral linewidth (FWHM) centered at 780nm. The device output power exceeded 90% of that for the free-running laser-diode bar. The emission wavelength was tuned over a 400pm range without broadening laser spectrum width. Absorption of 90% of the laser radiation by a 25 mm vapor cell containing Rb that has been pressure broadened with 300 torr of ethane was demonstrated.

© 2008 Optical Society of America

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