Two new swinging interferometers

Yazdi, S ; Sharif University of Technology | 2007

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  1. Type of Document: Article
  2. DOI: 10.1088/1464-4258/9/7/002
  3. Publisher: 2007
  4. Abstract:
  5. The most important disadvantage of swinging interferometers is that the optical path difference created in them is a nonlinear function of the rotation angle. In this paper, two new swinging interferometers are presented which have good linearity and provide a larger path difference in response to the rotation angle compared to other interferometers. This makes them suitable for applications such as high-resolution spectroscopy, and precision micro and nanopositioning. In one of these two interferometers, the optical path difference is created by rotation of a system composed of four mirrors, and in the other one it is created by rotation of a system consisting of two mirrors. They are not sensitive to external perturbations such as bending or deformations of the mount. Rotation by a small angle in the above-mentioned interferometers creates a large optical path difference, so they are suitable for use in rapid-scan Fourier transform spectroscopy. © IOP Publishing Ltd
  6. Keywords:
  7. Fourier transform infrared spectroscopy ; Image resolution ; Mirrors ; Nonlinear optics ; Optical transitions ; Rotation ; Fourier-transform spectrometers ; Optical path ; Rapidscan spectroscopy ; Swinging interferometers ; Interferometers
  8. Source: Journal of Optics A: Pure and Applied Optics ; Volume 9, Issue 7 , 2007 , Pages 560-564 ; 14644258 (ISSN)
  9. URL: https://iopscience.iop.org/article/10.1088/1464-4258/9/7/002