Description
Modulators:
An acousto-optic modulator’s purpose is to vary the intensity of the incoming laser beam (Amplitude Modulation, AM). The modulation can be digital (ON/OFF) or analog (sine, square, linear, random…).
The key parameter of a modulator is its rise/fall time, which defines the achievable “speed” of the modulation, or amplitude modulation bandwidth. The rise/fall time is proportional to the beam diameter inside the modulator. As a consequence, the laser beam must be focused inside the modulator to reach a fast rise time.
Fixed Frequency Shifters:
An acousto-optic frequency shifter uses the frequency shift of the laser beam inherent to the acousto-optic interaction. The laser wavelength is frequency shifted by the amount of the carrier RF frequency. The frequency shift can be positive or negative, depending on the angular sketch configuration. Modulators are used as fixed frequency shifters.
Additional information:
| Model | Material | Wavelength (nm) | Aperture (mmxmm) | Frequency (Shift) (MHz) | Polarisation | Rise time (ns) | Modulation Bandwidth (MHz) (AM) | Diffraction Efficiency (%) | Associated RF drivers |
|---|---|---|---|---|---|---|---|---|---|
| MQ200-A1,5-244.266.BR | Fused silica | 244-266 | 1.5 x 2 | 200 | Linear | 60 | 8 | 85 | MODAxx |
| MQ200-A1,5-266.300 | Fused silica | 266-300 | 1.5 x 2 | 200 | Linear | 60 | 8 | 85 | MODAxx |
| MQ180-A0,2-266.300 | Fused silica | 266-300 | 0.2 x 1 | 180 | Linear | 10 | 48 | 85 | MODAxx |
| MQ180-A0,2-UV | Fused silica | 325-425 | 0.2 x 1 | 180 | Linear | 10 | 48 | 80 | MODAxx |
| MQ180-A3-UV | Fused silica | 325-425 | 3 x 3 | 180 | Linear | 50 | 10 | 90 | MODAxx |
| MQ240-A0,2-UV | Fused silica | 325-425 | 0.2 x 1 | 240 | Linear | 6 | 80 | 70 | MODAxx |
| MQ180-A0,25-VIS | Fused silica | 440-650 | 0.25 x 1 | 180 | Linear | 10 | 48 | 70 | MODAxx |
| MCQ110-A2-VIS | Quartz | 488 - 633 | 2 x 2 | 110 | Linear | 50 | 8 | 85 | MODAxx |
| MT350-A0.12-VIS | TeO2 | 450 - 700 | 0,12 x 1 | 350 | Linear | 5 | 96 | 80 | MODAxx |
| MT250-A0.5-VIS | TeO2 | 450 - 700 | 0.5 x 2 | 250 | Linear | 6 | 80 | 85 | MODAxx |
| MT200-A0.5-VIS | TeO2 | 450 - 700 | 0.5 x 2 | 200 | Linear | 8 | 60 | 85 | MODAxx |
| MT110-A1-VIS | TeO2 | 450 - 700 | 1 x 2 | 110 | Linear | 15 | 32 | 85 | MODAxx |
| MT110-A1.5-VIS | TeO2 | 450 - 700 | 1.5 x 2 | 110 | Linear | 50 | 9 | 85 | MODAxx |
| MT80-A1-VIS | TeO2 | 450 - 700 | 1 x 2 | 80 | Linear | 23 | 21 | 85 | MODAxx |
| MT80-A1.5-VIS | TeO2 | 450 - 700 | 1.5 x 2 | 80 | Linear | 50 | 9 | 85 | MODAxx |
| MTS110-A3-VIS | TeO2 | 458 - 633 | 3 x 3 | 110 | Linear | 1000 | 0.4 | 85 | MODAxx |
| MTS40-A2-532.700-M002 | TeO2 | 532 - 700 | 2 x 2 | 40 | Linear | 1000 | 0.4 | 85 | MODAxx |
| MTS40-A3-750.850 | TeO2 | 750 - 850 | 3 x 3 | 40 | Linear | 1000 | 0..4 | 85 | MODAxx |
| MT110-B50A1.5-IR-Hk | TeO2 | 690 - 1064 | 1.5 x 2 | 110 +/- 25 | Linear | 50 | 9 | 80 | MPDSnC-xx |
| MT110-B69A1.5-680.1300-Lfv-Hk | TeO2 | 680 - 1300 | 1.5 x 2 | 110 +/- 34.5 | Linear | 50 | 9 | 80 | MPDSnC-xx |
| MT350-A0.12-800 | TeO2 | 700 - 950 (1100) | 0.12 x 1 | 350 | Linear | 5 | 96 | 80 | MODAxx |
| MT200-A0.5-800 | TeO2 | 700 - 950 (1100) | 0.5 x 2 | 200 | Linear | 8 | 60 | 85 | MODAxx |
| MT110-A1-IR | TeO2 | 700 - 950 (1100) | 1 x 2 | 110 | Linear | 15 | 32 | 85 | MODAxx |
| MT110-A1.5-IR | TeO2 | 700 - 950 (1100) | 1.5 x 2 | 110 | Linear | 50 | 9 | 85 | MODAxx |
| MT80-A1-IR | TeO2 | 700 - 950 (1100) | 1 x 2 | 80 | Linear | 23 | 21 | 85 | MODAxx |
| MT80-A1.5-IR | TeO2 | 700 - 950 (1100) | 1.5 x 2 | 80 | Linear | 50 | 9 | 85 | MODAxx |
| MT200-A0.5-1064 | TeO2 | 980 - 1100 | 0.4 x 2 | 200 | Linear | 8 | 60 | 80 | MODAxx |
| MT200-A0.2-1064 | TeO2 | 980 - 1100 | 0.2 x 1 | 200 | Linear | 8 | 60 | 80 | MODAxx |
| MT110-A1-1064 | TeO2 | 980 - 1100 | 1 x 2 | 110 | Linear | 15 | 32 | 85 | MODAxx |
| MT80-A1-1064 | TeO2 | 980 - 1100 | 1 x 2 | 80 | Linear | 23 | 21 | 85 | MODAxx |
| MT80-A1.5-1064 | TeO2 | 980 - 1100 | 1.5 x 2 | 80 | Linear | 50 | 9 | 85 | MODAxx |
| MTS80-A3-1064Ac | TeO2 | 1030 - 1080 | 3 x 3 | 80 | Linear | 500 | 1 | 85 | MODAxx |
| MQ80-A0.7-L1030.1064-Z20 | SiO2 | 1030 - 1080 | 0.7 x 1 | 80 | Linear | 120 | 14 | 85 | MODAxx QMODP0xx |
| MQ40-A3-L1064-W | SiO2 | 1030 - 1080 | 3 x 3 | 40 | Linear | 120 | 4 | 85 | MODAxx QMODP0xx |
| MQ40-A1.5-L1064-Z32-Cxxx | Quartz | 1030 - 1080 | 1.5 x 1.5 | 40 | Linear | 80 | 6 | 85 | MODAxx QMODP0xx |
| MQ80-A2-L1064-Z32-Cxxx | Quartz | 1030 - 1080 | 2 x 2 | 80 | Linear | 80 | 6 | 85 | MODAxx |
| MGAS40-A1 | Doped Glass | 1300 - 1600 | 1 x 2 | 40 | Random | 50 | 10 | 85 | MODAxx |
| MGAS80-A1 | Doped Glass | 1300 - 1600 | 1 x 2 | 80 | Random | 50 | 10 | 85 | MODAxx |
| MGAS110-A1 | Doped Glass | 1300 - 1600 | 1 x 2 | 110 | Random | 25 | 20 | 85 | MODAxx |
| MT80-A0.7-1300.1600 | TeO2 | 1300 - 1600 | 0.7 x 3 | 80 | Linear | 80 | 6 | 65 | MODAxx |
| MT80-A0.4-2000 | TeO2 | 1900 - 2100 | 0.4 x 1 | 80 | Linear | 25 | 20 | 65 | MODAxx |
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View the RF Drivers for Free Space AO Modulators and Fixed Frequency Shifters below.
