Phase-shifted laser feedback interferometry
نویسندگان
چکیده
منابع مشابه
Laser feedback interferometry and applications: a review
The progress on laser feedback interferometry technology is reviewed. Laser feedback interferometry is a demonstration of interferometry technology applying a laser reflected from an external surface, which has features including simple structure, easy alignment, and high sensitivity. Theoretical analysis including the Lang– Kobayashi model and three-mirror model are conducted to explain the mo...
متن کاملSpatial carrier interferometry from M temporal phase shifted interferograms: Squeezing Interferometry.
It is well known that having 3 temporal phase shifting (PS) interferograms we do not have many possibilities of using an algorithm with a desired frequency spectrum, detuning, and harmonic robustness. This imposes severe restrictions on the possibilities to demodulate such set of temporal interferograms. It would be nice to apply for example a 7 step PS algorithm to these 3 images in order to h...
متن کاملMeasurement of changes in optical path length and reflectivity with phase-shifting laser feedback interferometry.
The operating characteristics of a novel phase-shifting interferometer are presented. Interference arises by reflecting the light from a sample back into the cavity of a cw He-Ne laser. Changes in phase and fringe visibility are calculated from an overdetermined set of phase-shifted intensity measurements with the phase shifts being introduced with an electro-optic modulator. The interferometer...
متن کاملDesign of phase-shifted hybrid silicon distributed feedback lasers.
We present data on the design and performance analysis of phase shifted distributed feedback (DFB) lasers on the hybrid silicon platform. The lasing wavelength for various input currents and temperatures, for devices with standard quarter-wavelength, 60 μm and 120 μm-long phase shift are compared for mode stability and output power. The pros and cons of including a large phase shift region in t...
متن کاملFrequency-Shifted Interferometry for Fiber-Optic Sensing
Frequency-Shifted Interferometry for Fiber-Optic Sensing Fei Ye Doctor of Philosophy Graduate Department of Electrical and Computer Engineering University of Toronto 2013 This thesis studies frequency-shifted interferometry (FSI), a useful and versatile technique for fiber-optic sensing. I first present FSI theory by describing practical FSI configurations and discussing the parameters that aff...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Letters
سال: 1998
ISSN: 0146-9592,1539-4794
DOI: 10.1364/ol.23.001078