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Acousto-Optic Modulators
Keyword：
Acousto-Optic Modulators
Category：
- Description
- Parameters
- CAS'TechClass
-
Extracavity devices for intensity modulation of lasers
The acousto-optic modulators (AOM) are generally used to change the intensity of incident laser (amplitude modulation) outside the laser cavity. The modulation mode is determined by the type of RF driver, which can be digital (on/off) or analog (sine, square wave, linear, random, etc.). Generally, the RF driver of AOM adopts a fixed frequency. The key parameter of AOM is the rise/fall time, which defines the achievable "speed" or amplitude modulation bandwidth of modulation. The rise/fall time is proportional to the beam diameter of the modulator. Therefore, in order to achieve a fast rise time, the diameter of the incident laser beam must be controlled.
CASTECH has designed and developed a series of AOMs with a frequency range up to 300 MHz and a rise/fall time as low as 6 ns. CASTECH can optimize the design of the modulator according to customer requirements for modulation speed, wavelength, power, beam diameter, and extinction ratio, providing customers with the best modulation technology solution.Applications：
●Laser marking
●Photolithography
●Medical procedure
●Material processingCASTECH's products are produced independently throughout the entire process and can be customized according to customer needs. Refer to the following list for standard products.
Key words:- Free-space Acousto-Optic Modulators
- laser modulation
- fast modulation speed
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Model Number：CAOM-f-a-mt-w-c-h
Center Frequency
(f)
Aperture
(a)
Material(m)
Mode(t)
Wavelength (w)
RF
Connector (c)
Housing (h)
041
(40.68MHz)
…
010 (1 mm）
…
CQ
TE
C (Compressioa)
…
266 (266nm)
…
AF (SMA-F)
…
B09
…
Typical Specifications
Wavelength
Active Aperture
Operation frequency
Rise/fall time
Material
266，355 nm
3 mm
110，200 MHz
113 ns/mm
CQ
400-540 nm
1-3 mm
110 MHz
113 ns/mm
CQ
780-850 nm
0.5 mm
200 MHz
153 ns/mm
TE
1030-1064 nm
1-5 mm
68, 80 MHz
113 ns/mm
CQ
1064 nm
0.5-1 mm
100, 120 MHz
153 ns/mm
TE
1064 nm
0.1-0.15 mm
200, 250, 300 MHz
153 ns/mm
TE
9.4-10.6 μm
3-11.6 mm
40.68 MHz
120 ns/mm
/
Housing dimensions(mm)：
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