Resonant enhancement of photorefraction in CdTe via excitation of appropriate space-charge waves

Summary form only given. Space charge waves (SCW) may be generated in a material with large mobility-lifetime product in the presence of electric field. When excited with the light fringes the SCW may give rise to such exciting phenomena like spatial subharmonics generation and/or resonant photorefr...

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Bibliographic Details
Main Authors: Shcherbin, K., Odoulov, S., Khomenko, A., Rocha-Mendoza, I., Garcia-Zarate, M.
Format: Conference Proceeding
Language:English
Subjects:
Diffraction
Gain measurement
Gratings
Lighting
Nonlinear optics
Optical coupling
Optical sensors
Photorefractive effect
Resonance
Wavelength measurement
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Summary:Summary form only given. Space charge waves (SCW) may be generated in a material with large mobility-lifetime product in the presence of electric field. When excited with the light fringes the SCW may give rise to such exciting phenomena like spatial subharmonics generation and/or resonant photorefractive wave coupling. The SCW can be excited under homogeneous illumination, too., In present work we propose and implement a new to our knowledge technique of resonant enhancement of photorefraction, which is based on parametric interaction of light induced grating with self-excited SCW. To achieve SCW self-excitation the CdTe sample is illuminated by low-coherent radiation of 980 nm laser.
DOI:10.1109/CLEO.2002.1033627