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Applied Optics

Applied Optics


  • Vol. 25, Iss. 12 — Jun. 15, 1986
  • pp: 1982–1990

Achromatic optomechanical modulator

Denis Vincent  »View Author Affiliations

Applied Optics, Vol. 25, Issue 12, pp. 1982-1990 (1986)

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We present details of the construction and performance of an optomechanical amplitude modulator. The heart of the modulator is an oscillating small mirror which makes it a low-power low-voltage device. The modulation frequency is fixed, but, in our model, it can be changed from 10 to 20 kHz by simple adjustments, and the modulator has high transmission. Because it is an all-reflective device, it is achromatic with respect to modulation depth. Calculations for uniform and Gaussian beams are compared to experimental results obtained with He–Ne and CO2 lasers. The results are similar to those achievable with other types of modulator.

© 1986 Optical Society of America

Original Manuscript: December 23, 1985
Published: June 15, 1986

Denis Vincent, "Achromatic optomechanical modulator," Appl. Opt. 25, 1982-1990 (1986)

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  1. D. Vincent, G. Otis, “Télémètre à détection cohérente avec un laser CO2 à ondes entretenues: étude et conception,” Can. J. Phys. 61, 318 (1983). [CrossRef]
  2. M. Abramowitz, I. A. Stegun, Handbook of Mathematical Functions (Dover, New York, 1970), Sec. 7.1.6.
  3. I. S. Gradshteyn, I. M. Ryzhik, Table of Integrals, Series, and Products (Academic, New York, 1965), Sect. 3.915(4).
  4. K. Sassen, G. C. Dodd, “Lidar Crossover Function and Misalignment Effects,” Appl. Opt. 21, 3162 (1982). [CrossRef] [PubMed]
  5. Ref. 2, Sec. 26.3.24.
  6. Ref. 2, Secs. 26.3.26 and 26.3.27. (Note that x2 in 26.3.27 should read x2=R2-1-r.)
  7. Data sheet on off-axis parabolas available from Space Optics Research Laboratories.
  8. Data sheet on scanner L45 available from American Time Products Division of Frequency Control Products, Inc., Woodside, NY.
  9. Data sheet available from Scitec Instruments, Arcade Chambers, Victoria Road, Aldershot, Hampshire, U.K.
  10. Data sheet available from Bentham Instruments Ltd., 2 Boulton Rd., Reading, Berkshire, England RG2 ONH.
  11. D. Vincent, G. Otis, “Achromatic Opto-Mechanical Modulator,” DREV Report 4361/85, Appendix B; D. Vincent, “Amplitude Modulation with a Mechanical Chopper,” Appl. Opt. 25, 1035 (1986).

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