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Acousto-Optic Frequency Shifters
Product description:
The acousto-optic frequency shifter(AOFS) with RF driver is used to modify the frequency of the optical beam. Due to the Doppler shift, the frequency shift of 1st order diffracted light (variation quantity of wavelength) equals to the frequency of RF signal (wavelength). If the incident direction of acoustic wave and optic wave are the same, the shifted laser frequency value will be positive, on the other hand, if the incident direction of acoustic wave and optic wave are opposite, the shifted laser frequency value will be negative.
Applications such as interference-based optical techniques require a high extinction ratio between the diffracted and undiffracted beam.
CASTECH provides customized specs including center frequency and the shifted frequency value.
Applications:
● Interferometry
● Laser cooling
● Laser Doppler velocimetry
● Optical heterodyne detection
Schematic diagram of frequency shifter
Products
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Acousto-Optic Frequency Shifters
- The acousto-optic frequency shifter with RF driver is used to modify the frequency of the optical beam. CASTECH provides customized specs including center frequency and the shifted frequency value.
-
Product description:
The acousto-optic frequency shifter(AOFS) with RF driver is used to modify the frequency of the optical beam. Due to the Doppler shift, the frequency shift of 1st order diffracted light (variation quantity of wavelength) equals to the frequency of RF signal (wavelength). If the incident direction of acoustic wave and optic wave are the same, the shifted laser frequency value will be positive, on the other hand, if the incident direction of acoustic wave and optic wave are opposite, the shifted laser frequency value will be negative.
Applications such as interference-based optical techniques require a high extinction ratio between the diffracted and undiffracted beam.
CASTECH provides customized specs including center frequency and the shifted frequency value.
Applications:
● Interferometry
● Laser cooling
● Laser Doppler velocimetry
● Optical heterodyne detection
Schematic diagram of frequency shifter
Free-Space Frequency Shifters Model Number:CAFS-f-r-a-mt-w-c-h |
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Center Frequency (f) |
RF Range (r) |
Aperture (a) |
Meterial (m) |
Mode (t) |
Wavelength(w) |
RF Connector (c) |
Housing (h) |
41 MHz 70 MHz 73 MHz 80 MHz 83 MHz 100 MHz ... |
3 (±3 MHz) 10 (±10 MHz) ... |
010 (1 mm) 020 (2 mm) 030 (3 mm) 040 (4 mm) 050 (5 mm) 060 (6 mm) ... |
TE (TeO2) |
C (Compressional) S (Shear) |
583 nm 770 nm 1030 nm 1064 nm ... |
AF (SMA-F) AM (SMA-M) ... |
A17 A33 B07 B17 ... |
Typical Specifications |
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Center Frequency |
Active Aperture |
Wavelength |
Transmittance |
Frequency Shift Range |
Diffraction Efficiency |
70 MHz |
0.5~2 mm |
1064 nm |
≥ 99.0% |
± 3 MHz |
≥ 85% |
80 MHz |
0.5~2 mm |
1064 nm |
≥ 99.0% |
± 10 MHz |
≥ 80% |
80 MHz |
0.5~2 mm |
1550 nm |
≥ 99.0% |
± 15 MHz |
≥ 70% |
Housing dimensions(mm):
A17 B07
Fiber-Coupled Frequency Shifters Model Number:CAFSF-f-p-mqat-w-c-h |
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RF Frequency (f) |
RF Power (p) |
Material (m) |
Crystal Quantity (q) |
Fiber Type (a) |
Fiber Terminal (t) |
Wavelength(w) |
RF Connector(c) |
Housing (h) |
41 MHz 73 MHz 80 MHz 100 MHz 120 MHz 150 MHz 200 MHz ... |
020 (≤2 W) 025 (≤2.5 W) ... |
TE (TeO2) |
S D |
1 (HI1060) 2 (PM980) 3 (PM 10/125) 4 (10/125) 5 (20/125) 6 (10/125GDF) 7 (PM1550XP) 8 (PM1060L) 9 (SM28e) ... |
B (Bare Fiber) F (FC/APC) |
1030 nm 1064 nm 1550 nm ... |
AF (SMA-F) AM (SMA-M) ... |
A61 A91 B03 ... |
Typical Specifications |
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Center Frequency |
Wavelength |
Insertion Loss |
Extinction Ratio |
Frequency Shift Range |
80 MHz |
1550 nm |
≤ 2.5 dB |
≥ 45 dB |
± 3 MHz |
Housing dimensions(mm):
A17 B07