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Related Experiment Videos

LiInSe2 nanosecond optical parametric oscillator.

Jean-Jacques Zondy1, Vitaliy Vedenyapin, Alexander Yelisseyev

  • 1Institut National de Métrologie, CNAM, 292 Rue Saint-Martin, F-75003 Paris, France. jjz@nlotechnologies.fr

Optics Letters
|October 4, 2005
PubMed
Summary

Researchers report the first optical parametric oscillation using lithium selenoindate crystals. This new nonlinear crystal shows potential for superior performance in laser applications due to its high thermal conductivity.

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Area of Science:

  • Nonlinear Optics
  • Laser Physics
  • Materials Science

Background:

  • Optical parametric oscillation (OPO) is a key technique for generating tunable laser light.
  • Development of novel nonlinear optical crystals is crucial for advancing OPO performance.
  • Lithium selenoindate (LiInSe2) is a newly explored nonlinear crystal.

Purpose of the Study:

  • To demonstrate optical parametric oscillation using lithium selenoindate for the first time.
  • To characterize the performance of lithium selenoindate in a type II phase-matched OPO system.
  • To compare the potential performance of lithium selenoindate with existing nonlinear crystals like AgGaSe2.

Main Methods:

  • A 17 mm long, type II phase-matched lithium selenoindate crystal was used.

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  • The crystal was pumped by a 10 ns Nd:YAG laser.
  • Signal and idler wave tuning ranges and output energies were measured.

    • Main Results:

    • The minimum pump energy threshold for signal-resonant OPO was 3 mJ.
    • Signal waves were tunable between 1.47-1.57 µm and idler waves between 3.3-3.78 µm.
    • A total output energy of 170 µJ was achieved, corresponding to 2.4% energy conversion efficiency at 8 mJ pump energy, limited by AR coating damage.

    Conclusions:

    • Lithium selenoindate is a viable material for optical parametric oscillation.
    • Its performance is comparable to AgGaSe2, with potential for improvement.
    • Higher thermal conductivity of lithium selenoindate suggests superior performance with optimized crystal quality and coatings.