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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 16,
  • Issue 3,
  • pp. 453-
  • (1998)

Fiber-Coupling-Operated Orthogonal-Linear-Polarization Nd:YAG Microchip Laser: Photothermal Beat-Frequency Stabilization and Interferometric Displacement Measurement Application

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Abstract

The Nd3+:YAG microchip laser is operated at orthogonal-linear-polarized two frequencies (\lambda = 1.06 \;\mum). A low crosstalk of 104 is accomplished by means of the fiber-coupled laser diode pumping. The effect of another fiber-coupled laser diode irradiation on the beat frequency is investigated in terms of photothermally induced stress. The beat frequency of typically 100 MHz is stabilized within {\pm}1 MHz by means of the photothermal feedback control of the cavity stress. The utility of the laser in heterodyne interferometric displacement measurement with a good linearity and high resolution is demonstrated.

[IEEE ]

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