Title :
Dual-comb techniques for precision measurement
Author :
Coddington, I. ; Zolot, A.M. ; Giorgetta, F.R. ; Baumann, E. ; Swann, W.C. ; Newbury, N.R.
Author_Institution :
Quantum Electron. & Photonics, NIST, Boulder, CO, USA
Abstract :
Dual asynchronous comb techniques for precision measurement are coming of age. In spectroscopy such systems a can cover 42 THz of optical spectra with 100 MHz point spacing and signal to noise ratios (SNR) better than 3000. Careful examination of the systematic errors has begun and Doppler broadened molecular line centers can be determined reliably to within 200 kHz. In related systems dual and single comb calibrations of swept cw lasers can facilitate rapid (0.5 ms) distance measurement with sub-micron precisions off a diffuse target.
Keywords :
distance measurement; fibre lasers; high-speed optical techniques; measurement by laser beam; spectroscopy; Doppler broadened molecular line center; diffuse target; distance measurement; dual asynchronous comb techniques; dual comb calibration; precision measurement; single comb calibration; swept continuous wave laser; systematic error; Distortion measurement; Fiber lasers; Frequency measurement; Measurement by laser beam; Optimized production technology; Photonics; Spectroscopy; Frequency combs; laser tuning; metrology; spectroscopy;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6251123
