Title :
Coherent Time-Stretch Transform for Near-Field Spectroscopy
Author :
DeVore, Peter T. S. ; Buckley, Brandon W. ; Asghari, Mohammad H. ; Solli, D.R. ; Jalali, Bahram
Author_Institution :
Dept. of Electr. Eng., Univ. of California, Los Angeles, Los Angeles, CA, USA
Abstract :
The coherent time-stretch transform enables high-throughput acquisition of complex optical fields in single-shot measurements. Full-field spectra are recovered via temporal interferometry on waveforms dispersed in the temporal near field. Real-time absorption spectra, including both amplitude and phase information, are acquired at 37 MHz.
Keywords :
infrared spectroscopy; light interferometry; transforms; ultraviolet spectroscopy; visible spectroscopy; coherent time-stretch transform; complex optical fields; frequency 37 MHz; full-field spectra; near-field spectroscopy; real-time absorption spectra; single-shot measurements; temporal interferometry; Absorption; Bandwidth; Dispersion; Optical interferometry; Optical pulses; Phase measurement; Transforms; Ultrafast measurements; absorption spectroscopy instrumentation; complex-field optical signal characterization; optical signal processing; optical vector spectrum analyzer; temporal near-field; time-resolved spectroscopy; ultrashort pulse characterization;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2014.2312949
