Polarization-independent double phase conjugate mirror

• Published in: Optics communications Vol. 163; no. 4; pp. 223 - 229
• Main Authors: Dupray, V, Brunel, M, Özkul, C, Wolffer, N
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15-05-1999; Elsevier Science
• Subjects: Double phase conjugate mirror; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Nonlinear optics; Optical computers, logic elements, interconnects, switches; neural networks; Optical elements, devices, and systems; Optics; Phase conjugation, optical mixing, and photorefractive effect; Phase conjugation, optical mixing; photorefractive and kerr effects; Physics; Polarization; Telecommunication wavelength; Telecommunication wavelength; 42.79.T; Polarization; 42.65; Double phase conjugate mirror; 42.65.H; Diffraction efficiency; Inorganic compounds; Doped materials; Binary compounds; Experimental study; Phase conjugation; Optical polarization; Photorefractive crystal; Indium phosphides; Optical communication; Infrared radiation; Iron additions; Mirrors; Nonlinear optics
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/S0030-4018(99)00152-2

We present a polarization-independent double phase conjugate mirror (DPCM) working at telecommunication wavelength 1.32 μm. To do this, InP:Fe photorefractive crystals are used. A 2Z-DPCM configuration is realized in order to eliminate conical diffraction and to reduce the instabilities. With this device, the conjugation efficiency remains almost unchanged when the polarization state of the incident beam varies. Dynamic measurements demonstrate that the device is well-adapted to relatively slow variations of the polarization, induced by thermal variations for example.