Incoherent digital holography using geometric phase
- 작성자관리자
- 배포일2018.07.16
- 조회수270
ㅇ 제목 : Incoherent digital holography using geometric phase
ㅇ 일시 : 2018년 7월 18일 (수) 11:00-12:00
ㅇ 장소 : ETRI 6동 320호 회의실
ㅇ 강사 : 경희대 민성욱 교수
ㅇ 요약 :
A simple Fresnel-type self-interference incoherent digital holographic recording system is introduced. The main part of the system consists of the two linear polarizers and geometric phase lens. The geometric phase lens is employed as a polarization selective common-path interferometer. One of the polarizers is rotated by the motor and serves as a phase-shifter with the geometric phase lens, to eliminate the bias and twin image noise. A topological phase is obtained by the relative angle between the polarizer and geometric phase lens. Since this phase shifting method does not depend on the change of the optical path length, the phase shifting performance is almost constant in the broad spectral range. Using the proposed achromatic phase shifting method, a simultaneous three-color phase shifting digital hologram recording under the incoherent light source is demonstrated.
