Determination of nanometer vibration amplitudes by using a homodyne photorefractive crystal interferometer

Zamiri, Saeid; Reitinger, Bernhard; Berer, Thomas; Bauer, Siegfried; Burgholzer, Peter

doi:10.1016/j.proeng.2010.09.107

Cited by 7 publications

(1 citation statement)

References 3 publications

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“…A solution that was explored involved the application of a two-wave-mixing interferometer (TWMI) [ 173 , 174 ]. In these devices the beams interfere inside a photorefractive nonlinear crystal, where the beams are amplified and low frequency noises are suppressed so the effect of ambient noises like air disturbance is negligible [ 175 , 176 ].…”

Section: Non-contact Photoacoustic Signal Detectionmentioning

confidence: 99%

Towards non-contact photoacoustic imaging [review]

Hosseinaee

Bell

et al. 2020

Photoacoustics

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Photoacoustic imaging (PAI) takes advantage of both optical and ultrasound imaging properties to visualize optical absorption with high resolution and contrast. Photoacoustic microscopy (PAM) is usually categorized with all-optical microscopy techniques such as optical coherence tomography or confocal microscopes. Despite offering high sensitivity, novel imaging contrast, and high resolution, PAM is not generally an all-optical imaging method unlike the other microscopy techniques. One of the significant limitations of photoacoustic microscopes arises from their need to be in physical contact with the sample through a coupling media. This physical contact, coupling, or immersion of the sample is undesirable or impractical for many clinical and pre-clinical applications. This also limits the flexibility of photoacoustic techniques to be integrated with other all-optical imaging microscopes for providing complementary imaging contrast. To overcome these limitations, several non-contact photoacoustic signal detection approaches have been proposed. This paper presents a brief overview of current non-contact photoacoustic detection techniques with an emphasis on all-optical detection methods and their associated physical mechanisms.

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