Characterization and Stabilization of Opto Power Fiber-Coupled Laser Diode Arrays
نویسندگان
چکیده
We have characterized the spectra and performance of an ensemble of eleven fiber–coupled laser diode arrays (LDAs) manufactured by Opto Power Inc. These high–power LDAs operate near 795 nm and are of a type commonly used for spin–exchange optical pumping of noble gases. We find the Opto Power LDAs to vary significantly in output power, spectral width, and other important characteristics, in a manner not correlated with age, operating lifetime, or information supplied by the manufacturer. In addition we have developed a two–loop feedback technique for use with LDAs that stabilizes the Rb magnetization in an optical pumping cell to better than one part in a thousand.
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