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An acoustooptic deflector (AOD) spatially controls the optical beam. In the operation of an acoustooptic deflector the power driving the acoustic transducer is kept on, at a constant level, while the acoustic frequency is varied to deflect the beam to different angular positions.
developing the acoustooptical radio spectrometer under consideration, just a tellurium dioxide crystal looks to be the most adequate to the chosen application. A general view of an advanced prototype of the acoustooptic radio spectrometer is presented on Figure Photo of an advanced prototype of acoustooptic radio spectrometer.
Highspeed stimulated hyperspectral Raman imaging using rapid acoustooptic delay lines MOHAMMED S. ALSHAYKH,1,† CHIENSHENG LIAO,2,† OSCAR E. SANDOVAL,1 GREGORY GITZINGER,3 NICOLAS FORGET,3 DANIEL E. LEAIRD,1 JIXIN CHENG,1,2,4,5,6,7 AND ANDREW M. WEINER1,6,* 1Department of Electrical and Computer Engineering, 465 Northwestern Ave., Purdue .
Acoustooptic frequency shifters from Intra Action Corp. are available for a wide frequency shift range and lasers with wavelengths starting in the UV range and extending as far as MIR. Its design is primarily geared toward a high diffraction efficiency for the desired frequency shift.
Acoustooptic tunable filter (AOTF) is one of important optical switch components in optical networks. The possibility of tellurium dioxide acoustooptic tunable filter (TeO 2 AOTF) as an optical add/drop multiplexer (OADM) is studied on the basis of the theory of the anomalous acoustooptic Bragg diffraction and the design principle of
Abstract. Paratellurite, TeO 2, was first grown by the Czochralski method by Arlt and Schweppe (1) and has been shown to have an appreciable figure of merit for acoustooptic applications (2).We have studied improved methods for growing high quality TeO 2 and have investigated its usefulness as a nonlinear optic material. Our studies show that the quality of tellurium dioxide single crystals ...
Acoustooptic modulators (AOM) allow the intensity of light to be controlled and modulated at rates that far exceed mechanical shutters, even up to 70 MHz. Our modulators are optimized for low scatter and high laser damage threshold.
The acoustooptic modulator elements are selected for the intended application, and other system types can be configured on request. ... The acoustic material is tellurium dioxide, and the ...
Space qualification issues in acoustooptic and electrooptic devices Narasimha S. Prasad 1, Edward W. Taylor 2, Sudhir Trivedi 3, Sue Kutcher 3 and Jolanta Soos 3 1 Narasimha S. Prasad, NASA Langley Research Center, Laser Remote Sensing Branch,
An acoustooptic waveguide device comprises a substrate comprising a first material having a first refractive index and a first acoustic velocity; a cladding layer over the substrate, the cladding layer comprising a second material having a second refractive index that is distinct from the first refractive index, the second material having a second acoustic velocity that is distinct from the ...
Acoustooptic Devices and their Defence Applications 2 multiple orders. In 1965, Klein and Cook6 presented a detailed qualitative description of single and multiple order diffractions. In 1967, the same scientists7 presented their work based on a very important parameter known
May 15, 2001· Walmsley's device uses a piece of transparent tellurium dioxide called an acoustooptic modulator. This acts as the database by storing the information in the form of acoustic waves.
Acousto optic tunable filters are generally fabricated in Tellurium Dioxide, operating within the visible to near/mid infrared. The acousto optic tunable filter allows the user to select and transmit a single wavelength, or in some cases a selection of multiple discrete wavelengths from the incoming light.
A variety of different acoustooptic materials are used depending on the laser parameters such as laser wavelength (optical transmission range), divergence, and power density. For the visible and near infrared regions, the modulators are commonly made from gallium phosphide, tellurium dioxide, indium phosphide, or fused quartz.
TeO2 based frequency shifters are highly efficient acoustooptic devices, requiring very low drive power to achieve the desired frequency shift. Our designs consume minimal power (generally <100 mW power draw), often allowing us to package the driver with the AOFS for a more compact and powerefficient solution.
An acousto optic modulator is a device that modulates and controls the intensity of an optical beam. For highest speeds the laser beam will be focused down, forming a beam waist as it passes through the modulator. The main factors that dictate the design, and therefore choice of device, are the operating wavelength and the speed.
A Guide to AcoustoOptic Modulators D. J. McCarron December 7, 2007 1 Introduction Acoustooptic modulators (AOMs) are useful devices which allow the frequency, intensity and direction of a laser beam to be modulated. Within these devices incoming light Bragg di racts o acoustic wavefronts which propagate through a crystal.
prepared, utilizing an acoustooptic midinfrared pulse shaper to cut a hole in the excitation pulse spectrum, such that the hot band is not pumped. The isotropic pump−probe signal from the stretch/no bend state is altered because the initial excited state population ratio has changed.
8. An argon laser beam with wavelength nm is directed through a tellurium dioxide acoustooptic lightbeam deflector excited by a 100MHz acoustic wave. Tellurium dioxide has an acoustic velocity of ´ 10 5 cm/sec. Calculate the deflection angle for the beam. 9.
AcoustoOptic Modulators Based on the diffraction of light though means of sound waves travelling though a median The quartz crystal has a piezoelectric transducer attached at the end that propagates strong acoustic waves within the crystal.
and tellurium dioxide (TeO2) have found applications. Quartz is the material most commonly used for the ultraviolet spectral region. There have been several reports on the application of acoustooptic devices to different types of spectroscopy. Fulton and Horlick8examined paratellurite AOTF applications to atomic spectroscopy with hollow cathode
