Sutapa Das posted an Question
December 13, 2021 • 22:10 pm 30 points
  • CSIR NET
  • Physical Sciences

10. a plane wave (i+i9)e, exp i(hz-ot) after passing through an optical element emerges as (-) e, exp| i (kz - ot) |, where and o are the wavevector and the ang

10. A plane wave (i+i9)E, exp i(hz-ot) after passing through an optical element emerges as (-) E, exp| i (kz - ot) |, where and o are the wavevector and the angular frequency respectively. The optical element is a (a) quarter wave plate J6) half wave plate (c) polarizer (d) Faraday rotator

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    Bidyut sinha best-answer

    Please see attached picture.. answer is half wave plate..

    cropped339208977.jpg
  • Swapnadeep goswami

    The answer is half wave plate . See that the amplitude part cahnges from x+iy to x-iy ,this means that after passing through the optical element ,a phase change of π is introduced and a phase change of amount π relates to oath difference of lambda/2 since path difference= (lambda(wavelength)/2π )*phase difference. That is why half wave plate is the answer.

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