InGaAs/GaAs multiple quantum well (MQW) photorefractive devices that have t
he sensitivity around the wavelength of 1.06 mum are fabricated and some ch
aracteristics are measured. Saturation intensity is 3.6 mW/cm(2) and cut of
f grating pitch is 1.4 mum. These values show that this device is usable in
practical applications using Nd:YAG lasers. A vibration measurement system
using two-wave mixing is also demonstrated. (C) 2001 Elsevier Science B.V.
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