Abstract
Time-correlated single photon counting (TCSPC) is popular in time resolved techniques due to its prominent performance such as ultra-high time resolution and ultra-high sensitivity. However, this technique is limited by low counting rate and high system cost. In this paper, we report a new time-resolved optical measurement method which aims to achieve faster data acquisition without losing the key benefits of TCSPC. The new method is based on the spread spectrum time-resolved optical measurement method combined with single photon counting. A pseudo-random bit sequence is used to modulate a continuous wave laser diode, while the pulse sequence in response to the modulated excitation is recorded by a single photon detector. The impulse response is then retrieved by periodic cross-correlation. Both simulation and experimental work have been conducted to validate our approach. Experimental results with our prototype have shown a time-resolution better than 200 picoseconds. Besides the faster data acquisition and high timeresolution, the new method also affords other benefits such as portability and low cost.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
