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Fiber-Coupled AOM
- High quality
- High performance
- Advanced in-house design
- Durable
PRODUCT DESCRIPTION
By virtue of having no moving parts our acousto-optic modulators (AOMs) are able to amplitude modulate a laser beam at very high speed. For example modulation bandwidths in excess of 50MHz are readily achievable.
In an AOM a laser beam is caused to interact with a high frequency ultrasonic sound wave inside an optically polished block of crystal or glass (the interaction medium). By carefully orientating the laser with respect to the sound waves the beam can be made to reflect off the acoustic wavefronts (Bragg diffraction). Therefore, when the sound field is present the beam is deflected and when it is absent the beam passes through undeviated. By switching the sound field on and off very rapidly the deflected beam appears and disappears in response (digital modulation). By varying the amplitude of the acoustic waves the intensity of the deflected beam can similarly be modulated (analogue modulation).
It is usual to choose the deflected beam as the one that is used in the optical system because it can be switched on and off with high extinction ratio (typically >40dB) and intensity can be varied from zero to more that 85% of the incident beam. The rate at which the beam can be modulated is governed by the time it takes the acoustic wavefronts to traverse the laser beam, which depends on the beam diameter and the acoustic velocity in the interaction medium.
The sound waves are generated by a transducer, usually a thin wafer of lithium niobate, that is bonded onto the interaction medium using a highly efficient cold-weld metallic bonding process. When a high frequency electrical signal is applied to the transducer it vibrates, generating the acoustic wave. The signal is derived from an RF driver, which generates a high frequency carrier that is itself modulated by an analogue or digital input signal.
Principal applications for AO modulators are pre-press (putting image and text data onto films or plates as part of the printing process), laser imaging and displays, switching in telecom fibres, instrumentation and research.
1. Fiber-coupled Acousto-optical Modulators (AOM)
Our standard fibre-coupled AOMs are listed below. If you would like to see a detailed technical data sheet just click on the relevant model number. If you do not see a device that meets your requirements please contact one of our engineers. We manufacture application-specific AOMs and would be pleased to design one that meets your needs.
We offer a wide range of standard fibre-coupled AOMs with the following characteristics: -
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Our standard FCAOMs are listed below.
For old AOM model please refer HERE!
Model
Description
Optical Power
Wavelength
Rise/Fall time
Operating Frequency
Driver
S200-0.4C2N-3-F2P
Non-hermetic, PM
450,
532,
633,
780 nm
25 ns
200 MHz
1xxxAFAINA-
3.0 HCR
1xxxAFDINA-
3.0 HCR
T-M150-0.5C2W-3-F2S
Non-hermetic, SM
780 nm
30 ns
150 MHz
T-M150-0.5C2W-3-F2P
Non-hermetic, PM
780 nm
30 ns
150 MHz
T-M150-0.4C2G-3-F2S
Hermetic,
5W average
1060nm
30ns
150MHz
T-M200-0.1C2G-3-F2S
Hermetic, SM,
1W average
1060nm
10ns
200MHz
T-M200-0.1C2G-3-F2P
Hermetic, PM,
1W average
1060nm
10ns
200MHz
S-M150-0.4C2G-3-F2S
Non-hermetic, SM, HI1060
1060nm
30 ns
150 MHz
T-M260-0.1C2G-3-F2P
Hermetic, PM
1060nm
6 ns
260 MHz
T-M200-0.1C2G-3-F2P
Hermetic PM
1060nm
10 ns
200 MHz
T-M200-0.1C2G-3-F2S
Hermetic SM HI1060 1W average
1060nm
10ns
200MHz
T-M150-0.4C2G-3-F2P
Hermetic, Fujikura PM980
(SM98-PS-U25A)
5W average
1060nm
30ns
150MHz
T-M200-0.1C2J-3-F2P
Hermetic, Fujikura PM1550
(SM15-PS-U25A)
1W average
1550nm
10ns
200MHz
T-M200-0.1C2J-3-F2S
Hermetic, SMF28
1W average
1550nm
10ns
200MHz
T-M110-0.2C2J-3-F2S
Hermetic, SMF28
1W average
1550nm
25ns
110MHz
T-M110-0.2C2J-3-F2P
Hermetic, Fujikura PM1550
(SM15-PS-U25A)
1W average
1550nm
25ns
110MHz
T-M080-0.4C2J-3-F2S
Hermetic, SMF28
1W average
1550nm
35ns
80MHz
T-M080-0.4C2J-3-F2S
Hermetic, PM
1W average
1550nm
35ns
80MHz
T-M080-0.4C2J-3-F2P
Hermetic, Fujikura PM1550
(SM15-PS-U25A)
1W average
1550nm
35ns
80MHz
T-M040-0.5C8J-3-F2S
SMF28
1W average
1550nm
70-100ns
40MHz
T-M080-0.5C8J-3-F2S
Hermetic, Low power
consumption
1W average
1550nm
70-100ns
80MHz
T-M080-0.5C8J-3-F2P
Hermetic, Polarisation
Maintaining, Low power
consumption
1W average
1550nm
70-100ns
80MHz
T-M040-0.5C8J-3-F2P
Polarisation Maintaining,
1W average
1550nm
70-100ns
40MHz
T-M080-0.3C2Z-3-F2S
Nufern SM1950
5W average
2000nm
70-100ns
80MHz
T-M080-0.3C2Z-3-F2P
Nufern PM1950
5W average
2000nm
70-100ns
80MHz
2. STBR Series Fiber Coupled AOM
General Specification
Switching time (nsec) | <100 |
ON/OFF Extinction (dB) | >50 |
Back Reflection (dB) | <-50 |
Insertion Loss (dB) | < 2.5 |
Wavelengths (nm) | 380-2100nm |
Low Electric Power Consumption (dBm) | <23 |
Operating Wavelength Range (nm) | >60 |
Model # | Wavelength (nm) | Center Frequency (MHz) | Rise Time (ns) |
Modulation Bandwidth (MHz) |
Fiber Type |
STBR-TEM-110-10-55-2FP | 380-1600 | 110 | 55 | 10 |
SM or PM |
STBR-TEM-200-25-20-2FP | 380-1600 | 200 | 20 | 25 | |
STBR-TEM-250-50-10-2FP | 380-1600 | 250 | 10 | 50 | |
STBR-TEM-500-100-5-2FP | 380-1600 | 500 | 5 | 100 | |
STBR-IPM-200-25-20-2FP | 1000-2100 | 200 | 20 | 25 | |
STBR-IPM-500-100-5-2FP | 1000-2100 | 500 | 5 | 100 | |
STBR-AMM-100-20-25-2FP | 1000-2500 | 100 | 25 | 20 | |
STBR-AMM-55-8-70-2FP | 1000-2500 | 55 | 70 | 8 |
3. Fiber coupled AOM (AOMR series)
Part Number |
AOMR-80 |
AOMR-120 |
Interactive Material |
TeO2 |
TeO2 |
Acoustic Mode |
Longitudinal |
Longitudinal |
Operating Wavelength |
1064nm |
1064nm |
Operating Frequency |
80MHz |
120MHz |
Fiber Type |
Single mode Hi 1060, 0.5m long |
Single mode 10/125, 0.5m long |
Insertion Loss |
<2.0dB |
<2.0dB |
On/off Contrast Ratio |
>40dB |
>40dB |
Throughout Laser Power |
>3W CW (>5kW pulsed) |
>3W CW (>5kW pulsed) |
Light Polarization |
Random |
Random |
RF Power Level |
>1.5W |
>2W |
Impedance |
50 Ohm |
50 Ohm |
VSWR |
<1.2:1@ 80MHz |
<1.2:1@ 120MHz |
Mechanical Dimensions1 |
142mmx44mmx37mm |
139mm×56.5mm×25.5mm |
RF Driver |
AOMD-80-1.5 |
AOMR-120-2 |
RF Driver for AOMR series
Model |
AOMD-80-1.5 |
AOMR-120-2 |
AOM |
AOMR-80 |
AOMR-120 |
Output Frequency |
80.000 MHz + 0.01% Quartz Stabilized |
120.000 MHz + 0.01% Quartz Stabilized |
Spurious Levels |
-50 dBc Maximum |
-50 dBc Maximum |
Harmonic Distortion |
-15 dBc Maximum |
-15 dBc Maximum |
Modulation Input |
TTL, High Level: Full RF Power, Low Level: Minimum RF Power |
TTL, High Level: Full RF Power, Low Level: Minimum RF Power |
Extinction Ratio |
50 dB Minimum |
50 dB Minimum |
RF Rise |
200ns Maximum, PRF: 10 to 90 % |
200ns Maximum, PRF: 10 to 90 % |
Fall Time |
20 ns Maximum, PRF: 90 to 10 % |
20 ns Maximum, PRF: 90 to 10 % |
RF Output Powe |
>1.5 Watts, Factory Set for Optimum Performance |
>2 Watts, Factory Set for Optimum Performance |
Output Impedance |
50 Ohms Nominal |
50 Ohms Nominal |
Supply Voltage |
+ 24 VDC±0.5 Volt |
+ 24 VDC±0.5 Volt |
Supply Current |
1 Amp Maximum |
1.5 Amp Maximum |
Mechanical Dimensions |
114mm×58mm×30mm |
114mm×58mm×30mm |
MAXIMUM RATINGS: |
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Supply Voltage |
+ 28 Volts |
+ 28 Volts |
Power Output |
No DC Feedback Allowed |
No DC Feedback Allowed |
Case Temperature* |
+ 55°C |
+ 55°C |
*The Driver Must Be Attached to an Adequate Heatsink. |
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CONNECTORS & MECHANICAL: |
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RF Output Connector |
SMA Female |
SMA Female |
Modulation Input connector |
Wire |
Wire |
Power Supply connections |
Wire |
Wire |
Fiber coupled AOM (AOMM series)
Specifications:
Parameters |
Unit |
AOMM-①-②-③-④-⑤ |
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Central wavelength |
nm |
1064 |
1550 |
2000 |
Wavelength range |
nm |
±5 |
±5 |
±5 |
Typ. Insertion loss |
dB |
1.2 |
2.0 |
2.0 |
Max insertion loss |
dB |
1.5 |
3.0 |
3.0 |
Min isolation |
dB |
50 |
50 |
50 |
Min return loss |
dB |
50 |
50 |
50 |
Optical power CW |
W |
2 |
5 |
10 |
Min polarization extinction ratio |
dB |
20 (PM fiber) |
20 (PM fiber) |
20 (PM fiber) |
Peak power |
kW |
10 |
10 |
10 |
RF power |
W |
2 |
2 |
2 |
RF frequency |
MHz |
35/40/60/80/100/120/150/200 |
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VSWR |
MHz |
<1.2:1 (50ohm) |
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Tensile load |
N |
5 |
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Fiber type |
/ |
9/125, 10/125, 15/130, 20/130 or others |
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Fiber length |
m |
1 |
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Operating temperature |
°C |
5-50 |
Ordering code:
AOMM- ①- ②- ③-④-⑤
①: Wavelength in nm, 1064, 1550, 2000
②: Frequency in MHz, 35, 40, 60, 80, 100, 120, 150, 200
③: Fiber type, L06-6/125, L09-9/125, L10-10/125 DCF, L12-12/125 DCF, P06-PM98, P09-PM1550, P10-PM10/125 DCF, S-Specify
④: Fiber jacket on In&Out, B-Bare fiber, L-900um loose fiber, C-3mm loose fiber, S-Specify
⑤: Fiber length: 10-1.0m
Dimension: