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  Non-linear crystal Lithium Thioindate (LiInS2 or LIS)
 

      Non-linear characteristics of Lithium Thioindate (LiInS2 or LIS) crystal are close to AgGaS2 and AgGaSe2, but their crystal structures are different. LiInS2 is pyroelectric, its electrooptical parameters are the base for using it as an effective electrooptical material.
APPLICATIONS:
    • up-conversion of CO2-laser radiation image into near-IR or visible region • Different frequency generator in midle IR range (2-12 µm)
    • Optical parametric oscilator in 1-12 µm range with pump Al2O3: Ti • Frequency mixing in the middle IR region
    • For tunable solid state lasers using OPO, pumped by Nd:YAG and others lasers in range 1.2 - 10 µm

Literature:
    • L. Isaenko, A. Yelisseyev, S. Lobanov, A. Titov, V. Petrov, J.-J. Zondy, P. Krinitsin, A. Merkulov, V. Vedenyapin and J. Smirnova. Growth and properties of LiGaX2 (X=S, Se, Te) single crystals for nonlinear optical applications in the mid-IR. Cryst. Res. Technol. 38 (2003) 379-87
    • L. Isaenko, A. Yelisseyev, S. Lobanov, V. Petrov, F. Rotermund, G. Slekys and J.-J. Zondy. LiInSe2: A biaxial ternary chalcogenide crystal for nonlinear optical applications in the mid-infrared J. Appl. Phys. 91 (2002) 9475-80.
    • L. Isaenko, A. Yelisseyev, S. Lobanov, A. Panich, V. Vedenyapin, J. Smirnova, V. Petrov, J.-J. Zondy and G. Knippels. Characterization of LiInS2 and LiInSe2 single crystals for nonlinear optical applications. In Progress in Semiconductors Materials for Optoelectronic Applications 692 (2002) 429-34, E. D. Jones, M. O. Manasreh, K. D. Choquette et al. eds. (MRS, Warrendale, Penn, USA, 2002)
    • L. Isaenko, A. Yelisseyev, S. Lobanov, V. Petrov, F. Rotermund, J.-J. Zondy and G. H. M. Knippels. LiInS2: A new nonlinear crystal for the mid-IR. Mat. Sci. Semicond. Process. 4 (2001) 665-8.
    • F. Rotermund, V. Petrov, F. Noack, L. Isaenko, A.Yelisseyev and S. Lobanov. Optical parametric generation of femtosecond pulses up to 9 mm with LiInS2 pumped at 800 nm. Appl. Phys. Lett. 78 (2001) 2623-5.
    • G.M.H. Knippels, A.F.G. van der Meer et al, Mid-infrared (2.75-6.0-µm) second-harmonic generation in LiInS2, Optics Letters, May 1, 2001, 26,9, 617-619.

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