Frequency stabilization of two diode-pumped Nd:YAG lasers locked to two Fabry-Perot cavities

We describe frequency stabilization of two laser-diode-pumped Nd:YAG lasers independently locked to two high-finesse Fabry-Perot cavities. The frequency noise (FM noise) is reduced to the shot noise limit of 0.37 mHz/√ H z at the error signal. A heterodyne beat note between two locked lasers is used...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 33; no. 3B; pp. 1628 - 1633
Main Authors UEHARA, N, UEDA, K.-I
Format Conference Proceeding Journal Article
LanguageEnglish
Published Tokyo Japanese journal of applied physics 1994
Subjects
Doped-insulator lasers and other solid state lasers
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Lasers
Optics
Physics
Inorganic compounds
Mode locking
Laser pumping
Stabilization
Transition element compounds
Doped materials
Beats
Background noise
Experimental study
Heterodyne
Cavities
Solid state lasers
Neodymium additions
Frequency
Shot noise
YAG
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Summary:We describe frequency stabilization of two laser-diode-pumped Nd:YAG lasers independently locked to two high-finesse Fabry-Perot cavities. The frequency noise (FM noise) is reduced to the shot noise limit of 0.37 mHz/√ H z at the error signal. A heterodyne beat note between two locked lasers is used to measure the frequency stability, and the beat linewidth of 16 Hz and the root Allan variance of 19 Hz at time interval of 3 ms are measured. We also measured an effect of angular ground vibration to FM noise. The sensitivity of 3.38 mHz/√ H z / nrad below 10 nrad r m s is obtained in our system.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.33.1628