DocumentCode :
1421388
Title :
Stabilization of femtosecond mode-locked Ti:sapphire laser for high-accuracy pulse interferometry
Author :
Yasui, Takeshi ; Minoshima, Kaoru ; Matsumoto, Hirokazu
Author_Institution :
Dept. of Syst. & Human Sci., Osaka Univ., Japan
Volume :
37
Issue :
1
fYear :
2001
fDate :
1/1/2001 12:00:00 AM
Firstpage :
12
Lastpage :
19
Abstract :
We propose a method of long-term stabilization of the repetition rate and the spectral envelope in a femtosecond mode-locked (fs-ML) laser pulse by a simple control method without modifying the laser cavity configuration. The effectiveness of the repetition-rate-stabilized fs-ML laser was evaluated in a long-optical-path (LOP) pulse interferometer with a short reference arm. The resulting accuracy in the LOP pulse interferometer was improved to one-seventh that of a free-running fs-ML laser. Moreover, the stabilization of the spectral envelope was estimated to suppress the fluctuation in the phase and group indices of an object under testing by 1/50, which can increase the measurement accuracy in pulse interferometry. The simple and practical stabilization method provides a means to increase the application of pulse interferometry using the fs-ML laser
Keywords :
fluctuations; laser beams; laser cavity resonators; laser mode locking; laser stability; light interferometry; optical pulse generation; sapphire; solid lasers; titanium; Al2O3:Ti; Ti:sapphire laser; femtosecond mode-locked laser; femtosecond mode-locked laser pulse; fluctuation suppression; group indices; high-accuracy pulse interferometry; laser cavity configuration; long-optical-path pulse interferometer; long-term stabilization; measurement accuracy; object; phase indices; practical stabilization method; pulse interferometer; pulse interferometry; repetition rate; repetition-rate-stabilized laser; short reference arm; simple control method; spectral envelope; stabilization; testing; Fluctuations; Interferometry; Laser mode locking; Laser stability; Optical control; Optical pulses; Phase estimation; Phase measurement; Pulse measurements; Testing;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/3.892719
Filename :
892719
Link To Document :
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