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Laser optical feedback imaging insensitive to parasitic optical feedback
Applied Optics, 2007We present an optical architecture for the laser optical feedback imaging (LOFI) technique that makes it possible to avoid the effect of the optical parasitic reflections introduced by the optical components located between the laser source and the studied object. These reflections damage phase and amplitude information contained in the images.
Olivier, Jacquin +3 more
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Digital feedback optical vibrometer
2016 IEEE International Instrumentation and Measurement Technology Conference Proceedings, 2016Self-mixing interferometer allows to realize different kind of measuring systems, especially vibrometers. This work describes the design and implementation of a digital feedback-loop, acting on the laser pump current, able to lock the interferometer to half-fringe, and to measure the target vibration by estimating the feedback error signal. The digital
NORGIA, MICHELE +4 more
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Micro-optic technology for the microfluidics feedback
2011 IEEE International Conference on Automation Science and Engineering, 2011The possibility of miniaturization of existing optical setups and technologies for the monitoring and control in microfluidics could represent a step toward the realization of a complete polymeric micro-optic-fluidic system. In this context the presented work involves the design and the optic simulation of PDMS micro-optic interfaces to reproduce the ...
F. Sapuppo +2 more
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Optical feedback in photomultipliers
Measurement Techniques, 1968The measurements showed that, along with ordinary optical feedback, there occurs an optical feedback caused by ionic feedback; the contribution of the latter, however, to the overall background level is extremely small.
V. I. Albul, V. G. Baranov
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Optica Acta: International Journal of Optics, 1976
Some aspects of feedback technique in optical systems are examined. The eigenfunctions suitable for describing systems where both space and frequency limitations occur are discussed. Applications to the generation of super-resolving pupils and to the band unlimited restoration of images are presented.
P. De Santis +3 more
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Some aspects of feedback technique in optical systems are examined. The eigenfunctions suitable for describing systems where both space and frequency limitations occur are discussed. Applications to the generation of super-resolving pupils and to the band unlimited restoration of images are presented.
P. De Santis +3 more
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Optical Trapping and Optical Micromanipulation XV, 2018
Feedback traps can manipulate particles arbitrarily. In a feedback trap, a position detector detects the particle’s position, a computer calculates the necessary force to be applied based on the position in the “virtual potential,” which is applied to the particle. The process is repeated with as fast a loop rate as practical.
Kumar, Avinash, Bechhoefer, John
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Feedback traps can manipulate particles arbitrarily. In a feedback trap, a position detector detects the particle’s position, a computer calculates the necessary force to be applied based on the position in the “virtual potential,” which is applied to the particle. The process is repeated with as fast a loop rate as practical.
Kumar, Avinash, Bechhoefer, John
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IEEE Transactions on Instrumentation and Measurement, 2023
International ...
Bernal, Olivier +3 more
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International ...
Bernal, Olivier +3 more
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Optics Letters, 2004
Multisection semiconductor lasers for optical microwave generation have been fabricated that consist of a loss-coupled distributed feedback (LC-DFB), a phase control, and an amplifier section. High-frequency self-pulsations are generated according to the concept of a single-mode laser with short optical feedback.
Dae-Su, Yee +6 more
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Multisection semiconductor lasers for optical microwave generation have been fabricated that consist of a loss-coupled distributed feedback (LC-DFB), a phase control, and an amplifier section. High-frequency self-pulsations are generated according to the concept of a single-mode laser with short optical feedback.
Dae-Su, Yee +6 more
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Intracavity feedback optical trapping
Il Nuovo Cimento C, 2022Several research groups have integrated feedback control with optical trapping to improve performance, e.g., for force or position control. Among the different proposed approaches, using the feedback when trapping inside a laser cavity stands out for several reasons, namely, trapping can occur at lower optical intensities, reducing photodamage, and ...
Ciarlo, Antonio +5 more
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Impulse response of optical systems with feedback
Journal of Optics, 1982Studies, experimentally, the effect of feedback on the impulse response of coherent space and frequency-truncating systems. Agreement between theoretical predictions and experimental results was found.
S. AMADESI +2 more
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