Design and fabrication of a 24-channel acousto-optic spatial light modulator

Yin, Shizhuo; Leonov, Oleg B.; Yu, Francis T. S.; Molotok, Victor V.; Kludzin, Victor V.

doi:10.1364/ao.37.007482

Cited by 5 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…37 Combining multiple modulators in a SLM and tuning their relative phases might prove challenging, but is possible in principle. Already, 24-channel acousto-optical light modulators have been developed for a more 'modest' 100 kHz; 38 which is still a factor of 50000 faster than our setup. Using micromachined membrane mirrors an astounding 10 MHz modulation rate is possible.…”

Section: Discussionmentioning

confidence: 89%

Focusing light through living tissue

Vellekoop

Aegerter

2010

SPIE Proceedings

View full text Add to dashboard Cite

Tissues such as skin, fat or cuticle are non-transparent because inhomogeneities in the tissue scatter light. We demonstrate experimentally that light can be focused through turbid layers of living tissue, in spite of scattering. Our method is based on the fact that coherent light forms an interference pattern, even after hundreds of scattering events. By spatially shaping the wavefront of the incident laser beam, this interference pattern was modified to make the scattered light converge to a focus. In contrast to earlier experiments, where light was focused through solid objects, we focused light through living pupae of Drosophila melanogaster. We discuss a dynamic wavefront shaping algorithm that follows changes due to microscopic movements of scattering particles in real time. We relate the performance of the algorithm to the measured timescale of the changes in the speckle pattern and analyze our experiment in the light of Laser Doppler flowmetry. Applications in particle tracking, imaging, and optical manipulation are discussed. ABSTRACTTissues such as skin, fat or cuticle are non-transparent because inhomogeneities in the tissue scatter light. We demonstrate experimentally that light can be focused through turbid layers of living tissue, in spite of scattering. Our method is based on the fact that coherent light forms an interference pattern, even after hundreds of scattering events. By spatially shaping the wavefront of the incident laser beam, this interference pattern was modified to make the scattered light converge to a focus. In contrast to earlier experiments, where light was focused through solid objects, we focused light through living pupae of Drosophila melanogaster. We discuss a dynamic wavefront shaping algorithm that follows changes due to microscopic movements of scattering particles in real time. We relate the performance of the algorithm to the measured timescale of the changes in the speckle pattern and analyze our experiment in the light of Laser Doppler flowmetry. Applications in particle tracking, imaging, and optical manipulation are discussed.

show abstract

Section: Discussionmentioning

confidence: 89%

Focusing light through living tissue

Vellekoop

Aegerter

2010

SPIE Proceedings

View full text Add to dashboard Cite

show abstract

“…The delay between pulses 1 and 2 can also be encoded along a spatial dimension, where multiple time delays are directly imaged on a camera in a single experiment [32,33]. Moreover, delays can be set using spatial light modulators [34] or acousto-optic modulators [19,35–38]. Finally, the Soleil–Babinet compensator has recently been used for generating a time delay between two pulses [39].…”

Section: Introductionmentioning

confidence: 99%

Dispersion-free continuum two-dimensional electronic spectrometer

et al. 2014

View full text Add to dashboard Cite

Electronic dynamics span broad energy scales with ultrafast time constants in the condensed phase. Two-dimensional (2D) electronic spectroscopy permits the study of these dynamics with simultaneous resolution in both frequency and time. In practice, this technique is sensitive to changes in nonlinear dispersion in the laser pulses as time delays are varied during the experiment. We have developed a 2D spectrometer that uses broadband continuum generated in argon as the light source. Using this visible light in phase-sensitive optical experiments presents new challenges in implementation. We demonstrate all-reflective interferometric delays using angled stages. Upon selecting an ~180 nm window of the available bandwidth at ~10 fs compression, we probe the nonlinear response of broadly absorbing CdSe quantum dots and electronic transitions of Chlorophyll a.

show abstract

Acousto-optic spectrum analysis of RF pulsed signals having Bartlett and Blackman envelope waveforms

Perrela¹,

Alves²,

Oliveira³

1999 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference

View full text Add to dashboard Cite

Design and fabrication of a 24-channel acousto-optic spatial light modulator

Cited by 5 publications

References 1 publication

Focusing light through living tissue

Focusing light through living tissue

Dispersion-free continuum two-dimensional electronic spectrometer

Acousto-optic spectrum analysis of RF pulsed signals having Bartlett and Blackman envelope waveforms

Contact Info

Product

Resources

About