Optical and Quantum Electronics

, Volume 22, Supplement 1, pp S283–S313

Non-linear crystals for tunable coherent sources

  • J. T. Lin

DOI: 10.1007/BF02089016

Cite this article as:
Lin, J.T. Opt Quant Electron (1990) 22: S283. doi:10.1007/BF02089016


High-efficiency non-linear crystals suitable for the generation of coherent sources ranging from the deep ultraviolet to mid-infrared (0.16 to 5 µm) are explored. The key parameters for frequency conversion techniques (second-harmonic-generation, sumfrequency mixing, difference-frequency mixing, optical parametric oscillation (OPO) and stimulated Raman scattering) including tunability, beam quality, beam walk-off and the effective figure-of-merit are analysed. Materials selection rules for non-linear crystals (for wide transparency, high damage threshold, stability, low absorption and large figure-of-merit) are presented. Techniques using non-critical phase-matching, quasi-phase-matching, waveguided doubling and self-frequency doubling are explored. Features and applications of the new non-linear crystals ofβ-barium borate, lithium triborate (LBO), potassium titanyl phosphate (KTP), KNbO3 and MgO:LiNbO3 are presented and compared with other crystals. In addition to a critical review, this paper also presents some new results for the analysis of frequency-conversion efficiency, experimental data of OPO in KTP, LBO for frequency conversion using temperature-tuned non-critical phase-matching and green lasers from the diode-pumped self-frequency-doubling crystal of neodymium yttrium aluminium borate.

Copyright information

© Chapman and Hall Ltd. 1990

Authors and Affiliations

  • J. T. Lin
    • 1
  1. 1.Centre for Research in Electro-Optics and Lasers (CREOL) and Department of PhysicsUniversity of Central FloridaOrlandoUSA