Corrugated quantum well infrared photodetectors for polarization detection

نویسندگان

  • C. J. Chen
  • K. K. Choi
  • L. Rokhinson
  • W. H. Chang
  • D. C. Tsui
چکیده

In this letter, we propose the use of the newly developed corrugated quantum well infrared photodetectors ~C-QWIPs! for polarization detection. The corrugated structure, which serves as an optical coupler as well as the polarization-sensitive component, is in this case directly created into the active region of the QWIP, therefore dispensed with the need of an external polarizer. Moreover, four C-QWIPs with differently oriented corrugated patterns can be integrated as one unit, thus allowing a precise, real-time measurement of the polarization state. The polarimetry of this detector unit was characterized using a blackbody source and a metal grating polarizer. © 1999 American Institute of Physics. @S0003-6951~99!00706-8#

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تاریخ انتشار 1999