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has been cited by the following article:

• TITLE: Small-Force Measurement by Photo-Elastic Transducer

  AUTHORS: Naceur-Eddine Khelifa

  KEYWORDS: Induced Birefringence; Photo-Elastic Effect; Solid-State Laser; Small Force Sensor; Sensor Sensitivity

  JOURNAL NAME: Optics and Photonics Journal, Vol.4 No.1, January 21, 2014

  ABSTRACT: The use of stress-induced changes in a crystal of a monolithic solid-state laser by external force as a way for micro-force detection and measurement is described. In fact, the application of an unknown force on the resonator-amplifier crystal of a solid-state laser leads to a measurable change in the frequency of the beat note associated with the orthogonal polarisation components of the oscillating laser mode. Here we report our first measurements of the sensitivity of a photo-elastic force sensor, realised with a monolithic (4 × 4) mm plano-convex cylindrical crystal, and compare them with the results obtained by other authors for different configurations and dimensions of the laser sensor. The reported results are in a good mutual agreement but show notable discrepancies with theoretical predictions, especially for high sensitivities obtained when the dimensions of the laser sensor are small.