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Shock isolator for diode laser operation on a closed-cycle refrigerator (1977)

Hillman, J. J. ; Jennings, D. E.

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Publication Date: 2011-08-17

Description: Closed-cycle helium refrigerators are widely used as coolers for semiconductor diode lasers. These refrigerators pose several difficulties including temperature oscillations due to varying refrigerator capacity during the Solvay cycle, and impact shocks delivered to the diode in the cycle's expansion phase. A shock isolator has been designed to isolate diode lasers from such impact shocks. Slow diode current scans have been made before installation of the shock isolator, with the isolator but no thermal damper, and with both devices. With the isolator and no damper, the diode output frequency oscillated at the refrigerator cycle rate, deviating by plus or minus 40 MHz. Using the isolator and the damper no frequency fluctuation was detected.

Keywords: LASERS AND MASERS

Type: Review of Scientific Instruments; 48; Dec. 197

Format: text

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