800nm Free-Space Acousto-Optic Modulator for Ti:Sapphire lasers - sales@dmphotonics.com
When sending request please answer the following questions:
1. What is the wavelength?
2. What is the Beam Diameter?
3. What is the laser power?
4. Is it for frequency shifting or modulation? How much of frequency shift if frequency shifting? If for modulation, what is the modulation speed or pulse width?
5. Do you need RF driver?
Example of specifications:
800nm Free-Space Acousto-Optic Modulator
Model
DMP-AOM-800-100-L-T-D2-T-A-K
Application
Optical Switch
Optical Wavelength Shift
General Specification
Parameter Unit Min Max Typical Comments
Material TeO2
Wavelength nm 700 820 785
Average optical power handling W 30
Ultrasonic Velocity m/s 4200
Diffraction Efficiency % 85, 80
Center Frequency MHz 100 Customizable
Frequency Shift MHz 100
Frequency Bandwidth MHz ±10
Extinction Ratio (1st order on / off) dB 30
Optical Aperture（L*H） mm 3*2 Customizable
Radio Frequency Power W 2
Rise Time ns 400
VSWR 1.2:1
Input Impedance Ω 50
Deflection Angle mrad 18.69
Device Interface SMA
Working temperature ℃ -10~60
Storage Temperature ℃ -20~70
Del Mar Photonics offer two types of Acousto-Optic Devices - a collinear device made of quartz single crystals (SiO2) and lithium niobate (LiNbO3) and noncollinear unit made of paratellurite (TeO2) or KDP single crystals.
1. Quartz (SiO2) Tunable Filters
2. KDP (KH2PO4) Tunable Filters
3. Paratellurite (TeO2) Tunable Filters (Standart Resolution) - model 1
4. Paratellurite (TeO2) Tunable Filters (Standart Resolution) - model 2
5. Paratellurite (TeO2) Tunable Filters (High Resolution) - model 1
6. Paratellurite (TeO2) Tunable Filters (High Resolution) - model 2
7. Paratellurite (TeO2) Tunable Collinear Beam Filters (High Resolution, Low Drive Power) - model 1
8. Paratellurite (TeO2) Tunable Collinear Beam Filters (High Resolution, Low Drive Power) - model 2
9. Paratellurite (TeO2) Filter (High Resolution, nonsensitive to State of Light Polarization)
10. Paratellurite (TeO2) Filter (Low Drive Power, nonsensitive to State of Light Polarization)
11. Paratellurite (TeO2) Filter (Low Drive Power, Large Angle of View)
12. LiNbO3 Very High Resolution Tunable Filters (for Raman Spectroscopy)
13. Paratellurite (TeO2) Light Beam Deflectors - model 1
14. Paratellurite (TeO2) Light Beam Deflectors - model 2
15. Paratellurite (TeO2) Laser Q-switch
16. TeO2 AOM in Pure Raman-Nath Diffraction Mode as an Optical Phase Modulator. Application: use in FM sideband heterodyne spectroscopy
17. Electronical block (driver) for AO devices
18. Acousto-optic NIR imaging spectrometer
19. Acousto-optic paratellurite (TeO2) frequency shifter – model 1
20. Acousto-optic paratellurite (TeO2) frequency shifter – model 2
[ Ссылка ]
An acousto-optic modulator (AOM), also called a Bragg cell, uses the acousto-optic effect to diffract and shift the frequency of light using sound waves (usually at radio-frequency). They are used in lasers for Q-switching, telecommunications for signal modulation, and in spectroscopy for frequency control. A piezoelectric transducer is attached to a material such as glass. An oscillating electric signal drives the transducer to vibrate, which creates sound waves in the material. These can be thought of as moving periodic planes of expansion and compression that change the index of refraction. Incoming light scatters (see Brillouin scattering) off the resulting periodic index modulation and interference occurs similar to Bragg diffraction. The interaction can be thought of as a three-wave mixing process resulting in Sum-frequency generation or Difference-frequency generation between phonons and photons.
[ Ссылка ]
