• No results found

acousto-optic modulator (AOM)

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 ...

35

Experimental set up for characterization of acousto-optic modulator system

Experimental set up for characterization of acousto-optic modulator system

... of acousto-optic devices, namely, bulk acousto-optic devices, integrated optic devices and all-fibre acousto-optic devices (Goutzoulis, Pape, ...bulk ...

25

Transmission Characteristic Simulation of High Frequency Acousto Optic Modulators

Transmission Characteristic Simulation of High Frequency Acousto Optic Modulators

... modern acousto-optic ...The acousto-optic modulator (AOM) is a simple Bragg cell that uses the acousto-optic effect to diffract and shift the frequency of light using ...

13

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) is a device which can be used for controlling the power, frequency or spatial direction of a laser beam with an electrical drive ...the acousto-optic ...

13

Suppression of residual amplitude modulation appeared in commercial electro-optic modulator to improve iodine-frequency-stabilized laser diode using frequency modulation spectroscopy

Suppression of residual amplitude modulation appeared in commercial electro-optic modulator to improve iodine-frequency-stabilized laser diode using frequency modulation spectroscopy

... AOM: Acousto-optic modulator; APD: Avalanche photodetector; DBR: Distributed Bragg reflector; DFB: Distributed feedback; ECLD: External cavity laser diode; EOM: Electro-optic ...

12

Modified chalcogenide glasses for optical device applications

Modified chalcogenide glasses for optical device applications

... Acousto optic modulator All optical switching Continuous wave Differential interference contrast Erbium doped fibre amplifier Energy dispersive X-ray Electron paramagnetic resonance Exte[r] ...

243

Laser beam modulation by an acousto optic mode locker

Laser beam modulation by an acousto optic mode locker

... Mode locking was first observed experimentally in 1964 by Hangrove [1] in He Ne laser mode locked with an acousto optic modulator. The FM mode locking of He Ne laser was demonstrated in 1964 by ...

6

Modified chalcogenide glasses for optical device applications

Modified chalcogenide glasses for optical device applications

... Acousto optic modulator All optical switching Continuous wave Differential interference contrast Erbium doped fibre amplifier Energy dispersive X-ray Electron paramagnetic resonance Exte[r] ...

244

Direct UV written waveguide devices

Direct UV written waveguide devices

... Acousto-optic Modulator Amplified Spontaneous Emission Beam Propagation Method Coefficient of Thermal Expansion Chemical Vapour Deposition Distributed Bragg Reflector Distributed Feedbac[r] ...

177

An Improved Balanced Optical Phase-Locked Loop Incorporating an Electro-Optic Phase Modulator

An Improved Balanced Optical Phase-Locked Loop Incorporating an Electro-Optic Phase Modulator

... In the simulation analysis, the phase-error standard deviation (PESD) is calculated taking the phase noise, shot noise and loop-delay into account. Under locked state, the PESD is calculated at the balanced ...

7

An improved optically based PD detection system for continuous on line monitoring of HV cables

An improved optically based PD detection system for continuous on line monitoring of HV cables

... electro-optic modulator based PD detection tech- ...EO modulator and optical ...EO modulator, which are placed near cable joints, are passive without any additional power ...EO ...

13

All-trans retinoic acid arrests cell cycle in leukemic bone marrow stromal cells by increasing intercellular communication through connexin 43-mediated gap junction

All-trans retinoic acid arrests cell cycle in leukemic bone marrow stromal cells by increasing intercellular communication through connexin 43-mediated gap junction

... FRAP assay was carried out in living cells as described previously [48]. Briefly, cells cultured on glass cover slips were loaded with C-FDA (10 μmol/L, 15 min; Sigma) at 37 °C and washed thoroughly with DMEM medium. A ...

9

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

... The detection protocol associated with this technique is summarised in figure 1. Three cables are shown in the example. If the requirement is for cable B to be found, then the acousto-optic detection system ...

52

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

... The primary filtering device behind ALI and the technology that allows for the two-dimensional spatial imaging is the AOTF, which is typically made from a birefringent crystal. A radio frequency (RF) wave is propagated ...

17

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

Astronomical multi-object spectroscopy with a liquid crystal turnable filter

Astronomical multi-object spectroscopy with a liquid crystal turnable filter

... List Figure 1 : Figures of 3 functions Individually normalized Johnson UBVRI response 9 Figure 2: Acousto-Optic Tunable Filter Figure 3: Fabry-Perot Tunable Filter 12 Figure 4: Single St[r] ...

83

Development of AlGaAs /GaAs/ AlGaAs Step Quantum well to produce Tunable Photo Detector and Electro Absorption Modulator for noise reduction

Development of AlGaAs /GaAs/ AlGaAs Step Quantum well to produce Tunable Photo Detector and Electro Absorption Modulator for noise reduction

... The strength of absorption is found to increase with increasing electric field, mainly due to the stronger matrix element. The asymmetry observed between positive and negative biases is due to the fact that under forward ...

9

Pyroelectric Infrared (PIR) Sensor Monitoring System

Pyroelectric Infrared (PIR) Sensor Monitoring System

... An RF transmitter generally includes a modulator that modulates an input signal and a radio frequency power amplifier that is coupled to the modulator to amplify[r] ...

5

High frequency acousto electric microsensors for liquid analysis

High frequency acousto electric microsensors for liquid analysis

... Operating QCM than the a coated sensorsrather liquid phase requires a horizontal-polarized mode of vibration to reduce the acoustic loss in liquids and various devices using different pi[r] ...

256

MR imaging of optic pathways in patients with neurofibromatosis

MR imaging of optic pathways in patients with neurofibromatosis

... The lesions were assigned to one of four areas of involvement: 1 optic nerves; 2 optic chiasm; 3 posterior optic pathways including optic tracts, lateral geniculate bodies, and optic rad[r] ...

6

Show all 2061 documents...

Related subjects