Microwave-modulated photon doppler velocimetry
Document Type
Article
Date of Original Version
2-1-2016
Abstract
Photon Doppler velocimetry (PDV) has become an important technique for explosives diagnostics over the last two decades. However, the inherent necessity for a very highspeed digitizer has rendered this technology expensive and inaccessible to the general research community. This letter reports a microwave-modulated PDV method, based on the conventional PDV testing, in which an RF modulator was used to directly modulate the current of a laser transmitter. Carrying the modulated frequency, the received PDV beat frequency was then engaged with a second beat frequency at the photo receiver, resulting in a low detection frequency. This resulting frequency can be detected using a digitizer with a lower sampling rate while retaining the information necessary for high-speed velocimetry measurement.
Publication Title, e.g., Journal
IEEE Photonics Technology Letters
Volume
28
Issue
3
Citation/Publisher Attribution
Chen, Zhen, Ryan Rettinger, Gerald Hefferman, James Smith, Jimmie Oxley, and Tao Wei. "Microwave-modulated photon doppler velocimetry." IEEE Photonics Technology Letters 28, 3 (2016): 327-330. doi: 10.1109/LPT.2015.2495332.