Free Space Acousto-Optic Frequency Shifters
The Brimrose Free Space Acousto-Optic Frequency Shifter (AOFS) with RF driver is used to modify the frequency of the optical beam. Due to a Doppler shift, the frequency of the diffracted first order optical beam in the AO modulator or AO frequency shifter is shifted in frequency (wavelength) by the acoustic carrier frequency (wavelength).
If the incident acoustic wave is introduced in the direction of the incident optical wave, the laser frequency shifts towards the higher side. If the incident acoustic wave is introduced in the opposite direction of the incident optical wave, the laser shifts toward the lower frequency side.
Brimrose offers a large variety of RF drivers compatible with our AO Frequency Shifters. Typically, those are fixed-frequency or variable-frequency drivers.
KEY FEATURES
• Compact Integrated Design
• Wide Spectral Wavelength Range
• Low Drive Power
• Fast Switching Speed
• High Diffraction Efficiency
• Good Temperature Stability
• Custom Configurations Available
APPLICATIONS
• Industrial:
– Vibrometry
– Process Control
– Pulse Picking or Power Control
– Atom Cooling
• Scientific:
– Optical Heterodyning
– Interferometric System
– Laser Doppler Velocimetry
• OEM Designs
Model # Spectral Range
(nm)
Diffraction Efficiency Up To
(%)
Frequency Shift
(MHz)
Active Aperture
(mm)
Material AMF-90-2-2.1
1000-2200
15
90
1.0
AM
AMF-55-1.3
1000-2200
80
55
2.0
AM
AMF-100-1.3
1000-2200
80
100
2.0
AM
GEF-40-10
2000-12000
75
40
2.0
Ge
GEF-60-1.5
2000-12000
75
60
1.5
Ge
GEF-80-20
2000-12000
70
80
1.0
Ge
GPF-250-100
590-1000
60
250
0.75
GaP
GPF-650-225
590-1000
50
650
0.18
GaP
GPF-1000-500
590-1000
40
1000
0.076
GaP
GPF-1500-1000
590-1000
10
1500
0.076
GaP
GPF-1700-500
590-1000
30
1700
0.076
GaP
IPF-200-50
1000-1600
40
200
0.75
InP
IPF-400-200
1000-1600
35
400
0.50
InP
IPF-600-200
1000-1600
30
600
0.18
InP
IPF-800-300
1000-1600
20
800
0.076
InP
IPF-1000-350
1000-1600
15
1000
0.076
InP
IPF-1300-400
1000-1600
10
1300
0.076
InP
LNF-2500-1000
400/830
20
2500
0.076
LiNBO3
LNF-3500-1000
400-630
5
3500
0.076
LiNBO3
QZF-80-20
200-4500
75
80
1.0
SiO2
QZF-150-30
200-4500
75
150
0.75
SiO2
QZF-210-40
200-4500
75
210
0.5
SiO2
TEF-200-50
400-1600
60
200
0.75
TEO2
TEF-270-100
400-1600
60
270
0.75
TEO2
TEF-540-200
400-1600
40
540
0.18
TEO2
TEF-600-400
400-1600
40
600
0.18
TEO2
TEF-1000-300
400-1600
40
1000
0.076
TEO2
TEF-1700-350
400-1600
15
1700
0.076
TEO2
Driver Model # FFF-XX-B1-FY FFF-XX-B2-FY Frequency (MHz)
XX MHz (compatible with the AO device)
Frequency Control
Quartz crystal referenced phase locked loop
Frequency Accuracy (%)
0.015
Harmonic Content (dBc)
≤ - 10
Frequency Stability
0.0015% minimum after 15 minutes warm-up
Output Power (Watt)
Power is optimized for peak efficiency with the supplied A-O device.
Output Protection
Power amplifiers used will tolerate an infinite V.S.W.R. without damage. Rated power is available
only when a proper RF load is connected.
Rise/Fall Time
To match AO Frequency Shifter requirements
Modulation Type (optional)
Analog amplitude modulation
TTL compatible
Modulation Rate
To match AO Frequency Shifter requirements
Modulation Input
50 W; 0-1 V
330 W; 0-5 V
Operating Power
90-240 VAC, 50-60 Hz, 55 Watts max.
Enclosure
The unit will be packaged in a 190 mm (7.5 inch) wide by 100 mm (4 inch) high by 220 mm (8.75 inch)
deep instrument case. The rear panel heat sink increases the depth to a maximum of 270 mm
(10.5 inches). The size is exclusive of connectors. A detachable AC line cord and RF cable are provided.
Environmental
Nominal Laboratory Conditions: The maximum temperature is +35° C. The unit is not sealed against
moisture or condensing humidity.
Driver Model # VFF-XX-YY-V-A-F2 Frequency Range
Corresponding to the AO Device Requirements
Tuning Voltage
0 - 10 V analog (-2 to +20 VDC no damage)
Frequency Accuracy
1% nominal after 15 minute warm-up, constant temperature
Scanning Speed
50 micro sec from min to max frequency with step change in tuning voltage
Output Power
Power is optimized for peak efficiency with supplied AO device.
Modulation Type (optional)
Analog amplitude modulation
TTL compatible
Modulation Input
50 W; 0-1 V
330 W; 0-5 V
Operating Power
90-240 VAC, 50-60 Hz
Enclosure
The unit will be packaged in a 190 mm (7.5 inch) wide by 100 mm (4 inch) high by 220 mm (8.75 inch)
deep instrument case. The rear panel heat sink increases the depth to a maximum of 270 mm
(10.5 inches). The size is exclusive of connectors. A detachable AC line cord and RF cable are provided.
Environmental
Nominal Laboratory Conditions: The maximum temperature is +35° C. The unit is not sealed against moisture
or condensing humidity.
OEM Packaging is also available.
商品属性 [波长] 400-630/590-1000/1000-2200/2000-12000/590-1000 [活跃孔径] 0.076-2mm