Title:
光周波数の測定方法および装置
Document Type and Number:
Japanese Patent JP4633103
Kind Code:
B2
Abstract:
A method and an apparatus for optical frequency measurement, using one or two frequency-stabilized mode-locked laser combs operating at different repetition rates to mix with a laser under measurement (LLTM) respectively so as to generate two beat frequencies. The ordinal comb number where the beat frequency is generated is determined by measuring the ordinal comb number difference where the two beat frequencies are generated at different repetition rates so as to obtain the frequency of the LUM. The ordinal comb number difference is measured by using a dispersion device to offer an approximate ordinal comb number or by operating a mode-locked laser at three different repetition rates.
Inventors:
Lake Kinryu
Liu Koyasu
Jin Xu
Liu Koyasu
Jin Xu
Application Number:
JP2007289709A
Publication Date:
February 16, 2011
Filing Date:
November 07, 2007
Export Citation:
Assignee:
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
International Classes:
G01J9/02
Domestic Patent References:
| JP8101066A | ||||
| JP9297065A | ||||
| JP2002174552A | ||||
| JP2008107314A |
Other References:
J.-L. Peng, 他,“Determination of absolute mode number using two mode-locked laser combs in optical frequency metrology”,OPTICS EXPRESS,2007年 4月16日,Vol.15, No.8,pp.4485-4492
T.-A. Liu, 他,“Semi-automatic, Octave-spanning Optical Frequency Counter”,Conference on Lasers and Electro-Optics - Pacific Rim, 2007 [ CLEO/Pacific Rim 2007 ],2007年 8月,2p
L.-S. Ma, 他,“A new method to determine the absolute mode number of a mode-locked femtosecond-laser comb used fo,IEEE Journal of Selected Topics in Quantum Electronics,2003年 8月,Vol.9, No.4,pp.1066-1071
T.-A. Liu, 他,“Semi-automatic, Octave-spanning Optical Frequency Counter”,Conference on Lasers and Electro-Optics - Pacific Rim, 2007 [ CLEO/Pacific Rim 2007 ],2007年 8月,2p
L.-S. Ma, 他,“A new method to determine the absolute mode number of a mode-locked femtosecond-laser comb used fo,IEEE Journal of Selected Topics in Quantum Electronics,2003年 8月,Vol.9, No.4,pp.1066-1071
Attorney, Agent or Firm:
Eiichi Ohara