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Optics Letters

Optics Letters


  • Vol. 18, Iss. 7 — Apr. 1, 1993
  • pp: 558–560

400-Hz mechanical scanning optical delay line

K. F. Kwong, D. Yankelevich, K. C. Chu, J. P. Heritage, and A. Dienes  »View Author Affiliations

Optics Letters, Vol. 18, Issue 7, pp. 558-560 (1993)

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We have developed a simple, high-speed, nearly vibration-free, mechanically scanned, optical delay line suitable for femtosecond time-resolved signal-averaging measurements. We demonstrate a 2-ps time window autocorrelator with a display updated at 400 Hz. The delay line uses a dithering planar mirror as a time-varying linear phase ramp in the spectral plane of a modified grating–lens femtosecond pulse shaper. The time delay is linearly proportional to the angular deviation of the mirror. The high speed and low vibration are a result of the extremely small angular changes required to generate a large time delay.

© 1993 Optical Society of America

Original Manuscript: October 26, 1992
Published: April 1, 1993

K. F. Kwong, D. Yankelevich, K. C. Chu, J. P. Heritage, and A. Dienes, "400-Hz mechanical scanning optical delay line," Opt. Lett. 18, 558-560 (1993)

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