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Acousto-optic

Development and characterization of an acousto-optic modulator

Development and characterization of an acousto-optic modulator

... An acousto-optic modulator (AOM) has been developed and characterized. The system was evaluated by feeding radio frequency (RF) signal on the AOM crystal (fused silica crystal) to generate acoustic wave. ...

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Optical Bistability in an Acousto Optic Tunable Filter (AOTF) Operating with Short Optical Pulses

Optical Bistability in an Acousto Optic Tunable Filter (AOTF) Operating with Short Optical Pulses

... The transmission of information by optical way has known a considerable progress which led the scientists to wonder about the possibilities of creating systems with purely optical memories. Actually due the increasing ...

6

Holographic reconstruction of sound fields based on the acousto-optic effect

Holographic reconstruction of sound fields based on the acousto-optic effect

... The acousto-optic effect describes the interaction between sound and light, when the refractive index of the medium is changed by the presence of sound waves, which inherently involve pressure fluctuations, ...

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Ultrasound sensing using the acousto optic effect in polymer dispersed liquid crystals

Ultrasound sensing using the acousto optic effect in polymer dispersed liquid crystals

... This paper aims to demonstrate the practical importance of PDLC films for ultrasound sensing and their promise for applications. We work within the long wavelength regime in order to operate at typical ultrasonic ...

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Investigation of the influence of the scattering coefficient on acousto optic modulation efficiency in turbid phantoms

Investigation of the influence of the scattering coefficient on acousto optic modulation efficiency in turbid phantoms

... To measure the effect of local scattering coefficient on acousto-optic modulation efficiency we used the experimental set-up shown in Fig. 2.3. The setup is based on a two phase homodyne detection ...

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The Aerosol Limb Imager: acousto-optic imaging of limb-scattered sunlight for stratospheric aerosol profiling

The Aerosol Limb Imager: acousto-optic imaging of limb-scattered sunlight for stratospheric aerosol profiling

... large-aperture acousto-optic tunable filter (AOTF) to image the sunlit strato- spheric limb in a selectable narrow wavelength band ranging from the visible to the near ...

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Two Element Phased Array Acousto Optic Deflector at High Diffraction Efficiency: Scanning Range Broadening

Two Element Phased Array Acousto Optic Deflector at High Diffraction Efficiency: Scanning Range Broadening

... Phased-array transducers are used to broaden the frequency band (and, thus, the scanning range) and to lower the driving power of acousto-optic (AO) deflectors. Such a transducer consists of several ...

6

Different Plastic Materials Based Acousto-optic Modulators (AOMs) Design Considerations for Fast Switching Applications

Different Plastic Materials Based Acousto-optic Modulators (AOMs) Design Considerations for Fast Switching Applications

... An acousto-optic modulator (AOM) allows to diffract a laser beam going through a crystal from the incidence angle (order 0) to another angle (order ...polymeric acousto-optic materials based ...

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Studies into the detection of buried objects (particularly optical fibres) in saturated sediment  Part 5: an acousto optic detection system

Studies into the detection of buried objects (particularly optical fibres) in saturated sediment Part 5: an acousto optic detection system

... of optic fibres as distributed sensors is discussed, the most notable example of such a system being the ...related, acousto-optic effect, is also investigated, and it is shown that both length and ...

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Acousto optic superlattice modulator using Fibre Bragg grating

Acousto optic superlattice modulator using Fibre Bragg grating

... In this Letter we describe a modulator (briefly reported for the first time in Ref. 5) in which a fiber Bragg grating is excited by an axially propagating extensional acoustic wave. The underlying principle is ...

5

High frequency acousto optic effects in Bragg reflectors

High frequency acousto optic effects in Bragg reflectors

... the acousto-optic properties of a distributed Bragg reflector (DBR) manufactured from two immiscible polymers (cellulose acetate and ...the acousto-optic response of DBRs with acoustically ...

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Acousto Optic Measurement Device with High Angular Resolution

Acousto Optic Measurement Device with High Angular Resolution

... of acousto-optic devices allows for their wide application, particularly in diagnosis of random media by means of high accuracy angle measurements ...

5

Laser beam modulation by an acousto optic mode locker

Laser beam modulation by an acousto optic mode locker

... The characterization of beam modulation by acousto-optic mode locker is reported. HeNe laser was employed as a source. Acousto-optic mode locker (AOML) was used to convert the continuous beam ...

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Experimental set up for characterization of acousto-optic modulator system

Experimental set up for characterization of acousto-optic modulator system

... using acousto-optic, magneto-optic or electro-optic effects, as the principal components for external modulation of light wave have presently played the important role in modern long-haul ...

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Transmission Characteristic Simulation of High Frequency Acousto Optic Modulators

Transmission Characteristic Simulation of High Frequency Acousto Optic Modulators

... The acousto-optic interaction also makes it possible to mod- ulate the optical beam by keeping the acoustic wavelength (frequency) fixed and varying the drive power to vary the amount of light in the ...

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Time and Space Integrating Acousto-Optic Signal Processing

Time and Space Integrating Acousto-Optic Signal Processing

... The laser is the "power supply" of an optical signal processing system, as well as the carrier of the information within the system. When the laser power output is[r] ...

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Optical Spectrometer with Acousto Optical Dynamic Grating for Guillermo Haro Astrophysical Observatory

Optical Spectrometer with Acousto Optical Dynamic Grating for Guillermo Haro Astrophysical Observatory

... the acousto- optical version of optical spectrometer is able to reduce dimensions and weight of a a view of operating over the spectral range of wavelengths 400 - 800 ...low acousto-optic efficiency ...

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Ischemic optic neuropathies

Ischemic optic neuropathies

... Typically, AAION develops in elderly patients, with a mean age of 70 years, with severe visual loss (visual acuity < 20/200 (6/60) in the majority). It may be preceded by transient visual loss similar to that of ...

5

Fiber Optic Technology

Fiber Optic Technology

... The field breakout kit is designed to provide protection and support for terminated loose-tube style fiber optic cable. The clear 900 micron furcation tubes allow the installer to quickly identify the fiber using ...

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Las Vegas Optic,

Las Vegas Optic,

... Those present were Miss Lorraine Lowery, Miss Lorna m Johnson, Miss Phebe Hart, Miss Marie Clement, Miss Opal Jones, Miss Marie Mann, Miss Sadie Tooker, Miss Lucy Clement, Miss. Frances [r] ...

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