Absolute distance measurement by dual-comb nonlinear asynchronous optical sampling.

A dual-comb nonlinear asynchronous optical sampling method is proposed to simplify determination of the time interval and extend the non-ambiguity range in absolute length measurements. Type II second harmonic generation facilitates curve fitting in determining the time interval between adjacent pulses. Meanwhile, the non-ambiguity range is extended by adjusting the repetition rate of the signal laser. The performance of the proposed method is compared with a heterodyne interferometer. Results show that the system achieves a maximum residual of 100.6 nm and an uncertainty of 1.48 μm in a 0.5 ms acquisition time. With longer acquisition time, the uncertainty can be reduced to 166.6 nm for 50 ms and 82.9 nm for 500 ms. Moreover, the extension of the non-ambiguity range is demonstrated by measuring an absolute distance beyond the inherent range determined by the fixed repetition rate.

[1]  Young-Jin Kim,et al.  Time-of-flight measurement with femtosecond light pulses , 2010 .

[2]  J J M Braat,et al.  High-accuracy long-distance measurements in air with a frequency comb laser. , 2009, Optics letters.

[3]  H P Urbach,et al.  Long Distance Measurement with Femtosecond Pulses Using a Dispersive Interferometer References and Links , 2022 .

[4]  Dong Wei,et al.  Time-of-flight method using multiple pulse train interference as a time recorder. , 2011, Optics express.

[5]  Yan Li,et al.  Absolute distance measurement using frequency-sweeping heterodyne interferometer calibrated by an optical frequency comb. , 2013, Applied optics.

[6]  W. Kaiser,et al.  Intense Light Bursts in the Stimulated Raman Effect , 1966 .

[7]  Nathan R. Newbury,et al.  Searching for applications with a fine-tooth comb , 2011 .

[8]  Ki-Nam Joo,et al.  Absolute distance measurement by dispersive interferometry using a femtosecond pulse laser. , 2006, Optics express.

[9]  Seung-Woo Kim,et al.  Metrology: Combs rule , 2009 .

[10]  N. Schuhler,et al.  Frequency-comb-referenced two-wavelength source for absolute distance measurement. , 2006, Optics letters.

[11]  L J Wang,et al.  Precision measurement of the refractive index of air with frequency combs. , 2005, Optics letters.

[12]  Manuel Joffre,et al.  Asynchronous optical sampling with arbitrary detuning between laser repetition rates. , 2012, Optics express.

[13]  L. Nenadovic,et al.  Rapid and precise absolute distance measurements at long range , 2009 .

[14]  Ian Coddington,et al.  Sub-micron absolute distance measurements in sub-millisecond times with dual free-running femtosecond Er fiber-lasers. , 2011, Optics express.

[15]  Young-Jin Kim,et al.  High precision laser ranging by time-of-flight measurement of femtosecond pulses , 2012 .

[16]  S. A. van den Berg,et al.  Femtosecond frequency comb based distance measurement in air. , 2009, Optics express.

[17]  Dong Wei,et al.  Experimental observation of pulse trains' destructive interference with a femtosecond optical frequency-comb-based interferometer. , 2009, Optics letters.

[18]  Young-Jin Kim,et al.  Absolute distance measurement by dual-comb interferometry with adjustable synthetic wavelength , 2013 .

[19]  Young-Jin Kim,et al.  Absolute length measurement with the frequency comb of a femtosecond laser , 2009 .

[20]  N Bhattacharya,et al.  Many-wavelength interferometry with thousands of lasers for absolute distance measurement. , 2012, Physical review letters.

[21]  K. Minoshima,et al.  High-accuracy measurement of 240-m distance in an optical tunnel by use of a compact femtosecond laser. , 2000, Applied optics.

[22]  N. Schuhler,et al.  High-accuracy absolute distance measurement using frequency comb referenced multiwavelength source. , 2008, Applied optics.

[23]  M. L. Watts,et al.  Two-color subpicosecond optical sampling technique. , 1992, Optics letters.

[24]  Hall,et al.  Carrier-envelope phase control of femtosecond mode-locked lasers and direct optical frequency synthesis , 2000, Science.

[25]  Jun Ye.  Absolute measurement of a long, arbitrary distance to less than an optical fringe. , 2004, Optics letters.

[26]  Knight,et al.  Optical frequency synthesizer for precision spectroscopy , 2000, Physical review letters.

[27]  M. Först,et al.  Asynchronous optical sampling for high-speed characterization of integrated resonant terahertz sensors. , 2005, Optics letters.