1 April 1991 Energy transfer enhancement in photorefractive InP:Fe crystals using an auxiliary incoherent beam and a negative thermal gradient
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Abstract
The exponential gain of two-beam coupling in lnP:Fe crystals under dc fields is a function of the pump beam intensity at a given temperature. We propose two methods to extend the sample volume working under optimum conditions. The first method is based on a negative thermal gradient and the second uses an auxiliary incoherent beam. Theoretical simulations predict an integrated gain of l5 cm-1 and 10 cm-1, respectively (for λ = 1.06 μm. Λ = 5 μm and E0 = 10 kV/cm) in thick crystals (L = 5 mm). Preliminary experimental results confirm that high gain performances can be achieved by using these methods.
Cafer Ozkul, Gilbert Picoli, Philippe Gravey, Jean Le Rouzic, "Energy transfer enhancement in photorefractive InP:Fe crystals using an auxiliary incoherent beam and a negative thermal gradient," Optical Engineering 30(4), (1 April 1991). https://doi.org/10.1117/12.55820 . Submission:
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