The short rise time acousto-optic modulator (AOM) is designed for use in ultrafast fiber laser systems as pulse pickers to convert their high repetition rate from up to 50 MHz to kHz or any lower frequencies. They can also be used as Q-switches in lasers, or as ultrafast optical switches in applications where very fast optical switching or modulations are required.
It has 20ns risetime and very high extinction ratio (ER) of up to 60dB to ensure very high degree suppression of the unwanted pulses.
This fast AOM can work with our AOD30 AOM driver, or with other compatible AOM drivers available in the market.
In addition to standard products, we have the capability to design and manufacture custom AOMs to the specs of your choice. Wavelength, fiber type, risetime, optical power, and package can all be customized to fit your needs.
Features
- Low insertion loss
- Fast rise/fall time
- High on/off contrast ratio
- High PER
- Stable performance
- Compact OEM package
- Customer configuration available
Applications
- Mode-locked laser pulse picking
- Fast optical shutter
- Q-switching
- Optical switch
- Frequency shifter
- Acousto-optic modulator
- Pulse extraction of cavity dump lasers
- Pulse injection & extraction for regenerative amplifiers
Optical, Electrical & Environmental Characteristics
TOP=25C, beginning of life unless otherwise specified
| Parameter | Unit | Nominal | Min | Max |
|---|---|---|---|---|
| Operating wavelength | nm | 1045 | 1020 | 1070 |
| Insertion loss | dB | 2.0 | 3.0 | |
| Rise-time/Fall-time (10% - 90%) | ns | 10 | ||
| Extinction ratio (on/off) | dB | 55 | 50 | |
| Return loss (RF on/RF off) | dB | 55 | 50 | |
| Optical polarization | Linear, along PM fiber slow axis | |||
| Polarization extinction ratio | dB | 25 | 23 | |
| RF frequency | MHz | 200 | ||
| Input impedance | W | 50 | ||
| VSWR | 2 : 1 | |||
| RF power | W | 6.5 | 7.5 | |
| Fiber type | Fujikura SM98-PS-U25A, 1.5m, bare fiber (or per request) | |||
| Dimension (LxWxH) | inch (mm) | 3.82x1.58x1.22 (97x40x31) | ||
Absolute Maximum Rating
Stress beyond those ratings may cause damage to the device. These values are stress ratings only. Operation of the device at these or beyond these ratings are not implied. Exposure to these ratings for extended time may affect device reliability
| Parameter | Unit | Min | Max |
|---|---|---|---|
| Storage temperature | C | -20 | 65 |
| Operating case temperature | C | -20 | 65 |
| Humidity | % | 90 | |
| Average optical input power | W | 5 | |
| Peak power handling (<10 picosec laser pulse) | W | 1000 | |
| RF input power (continuous) | W | 12 | |
| Fiber bend radius | mm | 30 | |
| Fiber pull force | N | 5 | |
| ESD (human body model) | V | 500 |
AOM Application Example Pulse Picking
