作者: E. Kru¨ger,
期刊: Review of Scientific Instruments (AIP Available online 1995) 卷期: Volume 66, issue 10
页码: 4806-4812
ISSN:0034-6748
年代: 1995
DOI:10.1063/1.1146156
出版商: AIP
数据来源: AIP
摘要:
The mode comb of a synchronously pumped mode‐locked dye laser is stabilized in frequency by locking one of its modes to a transmission maximum of a reference Fabry–Perot interferometer. The frequency error signal, obtained by a conventional modulation–demodulation technique, is fed back to permanently readjust the cavity length of the laser via an integrating servo amplifier and a piezo‐positioned end mirror. Insertion of an appropriate loop filter prevents loop oscillations on the dominant mechanical resonance of the transducer–mirror combination. A special ramp automatic reset function is introduced to avoid saturation of the servo amplifier. To verify the improvement in laser stability the emission spectrum was scanned with a high‐resolution optical spectrum analyzer. A laser linewidth of 3 MHz has been achieved. Extended linear sweeps of the stabilized mode comb for spectroscopic measurements were realized by simultaneously tuning the reference cavity and tilting the intracavity etalon. ©1995 American Institute of Physics.
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