Phase-conjugate Twyman-Green interferometer for testing conicoidal surfaces

Shukla, R. P.; Dokhanian, Mostafa; Venkateswarlu, Putcha; George, M. C.

doi:10.1117/12.51077

Cited by 3 publications

(1 citation statement)

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“…5 The PCM was also used for removing the aberrations of a diverging beam of light introduced by a beam splitter, and a compensating plate to eliminate the aberrations was not required. 6,7 Another important application of the distortioncompensation property of a PCM lies in reducing the speckles in the light reflected diffusely by a rough surface to yield interference signals with high signalto-noise ratio. 8 -10 The spatial phase distribution of a wave incident upon a self-pumped phase-conjugate mirror ͑SPPCM͒ is reversed in sign by the SPPCM to generate a self-pumped phase-conjugate wave ͑SPPCW͒.…”

Section: Introductionmentioning

confidence: 99%

Measurement of small vibration amplitudes of a rough surface by an interferometer with a self-pumped phase-conjugate mirror

Wang¹,

Sasaki²,

Suzuki³

et al. 2000

Appl. Opt.

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The application of a Michelson interferometer with a self-pumped phase-conjugate mirror to measure small vibration amplitudes of a rough surface is described. The distorted wave front of the light that is diffusely reflected from the rough surface is restored by phase conjugation to provide an interference signal with a high signal-to-noise ratio. The vibration amplitudes of a stainless-steel sample are measured with a precision of approximately 5 nm.

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Section: Introductionmentioning

confidence: 99%