Photorefractive gain enhancement in InP:Fe using band-edge resonance and temperature stabilization

We report photorefractive two beam coupling gain coefficients as high as Γ=19 cm−1 and net gains of Γ-α=14 cm−1 in InP:Fe at around 970 nm. This enhancement was achieved by combining band-edge resonant nonlinearities with a second resonant enhancement derived from the bipolar transport in this mater...

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Bibliographic Details
Published in:Applied physics letters 1990-12, Vol.57 (26), p.2776-2778
Main Authors: MILLERD, J. E, KOEHLER, S. D, GARMIRE, E. M, PARTOVI, A, GLASS, A. M, KLEIN, M. B
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Optics
Physics
Wave optics
Wave propagation, transmission and absorption
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Summary:We report photorefractive two beam coupling gain coefficients as high as Γ=19 cm−1 and net gains of Γ-α=14 cm−1 in InP:Fe at around 970 nm. This enhancement was achieved by combining band-edge resonant nonlinearities with a second resonant enhancement derived from the bipolar transport in this material. Measurements of gain as a function of pump intensity, applied field, grating spacing, wavelength, and temperature are presented. No moving gratings were required.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.103784