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Volumn 25, Issue 5, 2000, Pages 311-313

Cancellation of laser dither modulation from optical frequency standards

Author keywords

[No Author keywords available]

Indexed keywords

LASER DITHER MODULATION;

EID: 0039243751     PISSN: 01469592     EISSN: None     Source Type: Journal    
DOI: 10.1364/OL.25.000311     Document Type: Article
Times cited : (21)

References (9)
  • 2
    • 0002949688 scopus 로고
    • A. J. Wallard, J. Phys. E 5, 926 (1972); J. L. Hall, G. Kramer, and R. L. Barger, in Conference on Precision Electro Magnetic Measurement Digest 1972 (Institute of Electrical and Electronics Engineers, New York, 1972), p. 75.
    • (1972) J. Phys. E , vol.5 , pp. 926
    • Wallard, A.J.1
  • 4
    • 84893894473 scopus 로고    scopus 로고
    • note
    • Early digital frequency counters typically accumulate the number of positive zero crossings in a set time, giving correct counts but limited precision. A newer design (HP53132A) has vastly higher resolution by using a random sampling. At carrier frequencies above 50 MHz this strategy works even with the 6-MHz peak-to-peak FM discussed in this Letter. But, at much below this carrier frequency, such deep FM causes erratic operation, giving errors of many megahertz.
  • 6
    • 84893884945 scopus 로고    scopus 로고
    • note
    • 2 by dither-locking techniques.
  • 7
    • 84893884261 scopus 로고    scopus 로고
    • note
    • The unit used was Model 925A from Berkeley Nucleonics. This information is provided for technical communication purposes only and does not constitute an endorsement by the National Institute of Standards and Technology or the University of Colorado.
  • 8
    • 84893888754 scopus 로고    scopus 로고
    • note
    • Feedback alone could in theory cancel such FM and was in fact tried with the goal of inherently correcting for the nonlinearity of the AOM driver. However, the noise performance of feedback was found to be far inferior to feed forward, because to have a useful gain of G at modulation frequency f a required feedback servo bandwidth of greater than Gf brings added noise across this entire frequency region. Feed forward can provide exact cancellation of a known perturbation with essentially no bandwidth and hence practically zero added noise.
  • 9
    • 84893888893 scopus 로고
    • Precise removal from a laser beam of large frequency modulations generated either internally or externally to the laser
    • May 19
    • M. S. Taubman and J. L. Hall, "Precise removal from a laser beam of large frequency modulations generated either internally or externally to the laser," Provisional Application No. 60/134, 884, May 19, 1994.
    • (1994) Provisional Application , vol.60 , Issue.134 , pp. 884
    • Taubman, M.S.1    Hall, J.L.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.