Adaptive interferometers with no external field using reflection gratings in CdTe:Ge at 1550 nm

作者：Shcherbin K^*; Klein M B

来源：Optics Communications, 2009, 282(13): 2580-2585.

DOI：10.1016/j.optcom.2009.03.055

• Adaptive interferometer
• Homodyne detection
• Cadmium telluride
• Photorefractive semiconductors

We demonstrate experimentally the operation of an adaptive two-wave mixing interferometer with no field applied to a photorefractive crystal in which the quadrature condition is introduced by an external pi/2 phase step. To achieve high signal to noise ratio the counter-propagating geometry for grating recording is used with a CdTe:Ge crystal, ensuring effective recording of reflection holograms. It is demonstrated that the interferometer with a photorefractive semiconductor crystal provides good sensitivity without the adverse effects that are normally associated with an applied field.

• 出版日期2009-7-1