- Covering the frequency range from 10 kHz to 9.2 GHz
- Resonant designs offer very low drive voltages
- Mechanical apertures at input and output for easy optical alignment
Our popular line of phase modulators are ideally suited for applications in atomic physics (including atom-trapping and cooling experiments), laser-frequency stabilization (?Phase and Amplitude Modulators Definitions of Characteristics), high-resolution spectroscopy, and laser-guide-star systems for astronomy. We offer broadband modulators that can be used at a wide range of frequencies and resonant modulators that operate at a single frequency with much lower drive-voltage requirements. When used properly, the New Focus electro-optic phase modulators can provide ef?cient phase modulation with extremely low unwanted amplitude modulation and insertion loss. The key to obtaining this pure phase modulation is good optical alignment of the beam to the crystal’s propagation axis and accurate orientation of the laser’s electric ?eld with the crystal’s electro-optic axis. New Focus makes proper alignment easy: simply pass the beam through the mechanical apertures.
For applications requiring higher optical damage thresholds, see our KTP phase modulators on High DamageThreshold Phase Modulators. For applications requiring even higher efficiencies and modulation depths, see our high-efficiency phase modulators on High Efficiency Phase Modulators.
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4001
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4002
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4003
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4004
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4421
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Operating Frequency
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0.01-250 MHz
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DC to 100 MHz
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0.01-250 MHz
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DC to 100 MHz
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250-2000 MHz
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Wavelength Range
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500-900
|
500-900
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1000-1600
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1000-1600
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500-900
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Material
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MgO:LiNbO3
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MgO:LiNbO3
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MgO:LiNbO3
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MgO:LiNbO3
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MgO:LiNbO3
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Modulation Depth
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0.1-0.3 rad/V @1 µm
|
15 µrad/V @1 µm
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0.1-0.3 rad/V @1 µm
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15 µrad/V @1 µm
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0.05-0.1 µrad/V @1 µm
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|
Maximum Vπ
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10-31 V @ 1.06 µm
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210 V @ 1.06 µm
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10-31 V @ 1.06 µm
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210 V @ 1.06 µm
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31-63 V @ 1.06 µm
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Maximum Input Power
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4 W/mm2 @ 647 nm
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4 W/mm2 @ 647 nm
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4 W/mm2 @ 1.3 µm
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4 W/mm2 @ 1.3 µm
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4 W/mm2 @ 647 nm
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Aperture Diameter
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2
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2
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2
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2
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2
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RF Bandwidth
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2-4% freq.
|
100 MHz
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2-4% freq.
|
100 MHz
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0.5% freq.
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|
RF Connector
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SMA
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SMA
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SMA
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SMA
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SMA
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Input Impedance
|
50
|
20
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50
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20
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50
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Maximum RF Power
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1 W
|
10 W
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1 W
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10 W
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4 W
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|
VSWR
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<1.5
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<1.5
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<1.5
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|
|
4423
|
4431
|
4433
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4851
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4853
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|
Operating Frequency
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250-2000 MHz
|
2000-4600 MHz
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2000-4600 MHz
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6800 or 9200 MHz
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6800 or 9200 MHz
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|
Wavelength Range
|
1000-1600
|
500-900
|
1000-1600
|
500-900
|
1000-1600
|
|
Material
|
MgO:LiNbO3
|
MgO:LiNbO3
|
MgO:LiNbO3
|
MgO:LiNbO3
|
MgO:LiNbO3
|
|
Modulation Depth
|
0.05-0.1 µrad/V @1 µm
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0.04-0.07 µrad/V @1 µm
|
0.04-0.07 µrad/V @1 µm
|
0.04 µrad/V @1 µm
|
0.04 µrad/V @1 µm
|
|
Maximum Vπ
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31-63 V @ 1.06 µm
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45-79 V @ 1.06 µm
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45-79 V @ 1.06 µm
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79 V @ 1.06 µm
|
79 V @ 1.06 µm
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|
Maximum Input Power
|
4 W/mm2 @ 1.3 µm
|
4 W/mm2 @ 1.06 µm
|
4 W/mm2 @ 1.3 µm
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4 W/mm2 @ 647 nm
|
4 W/mm2 @ 1.3 µm
|
|
Aperture Diameter
|
2
|
1
|
1
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|
|
|
RF Bandwidth
|
0.5% freq.
|
0.5% freq.
|
0.5% freq.
|
0.5% freq.
|
0.5% freq.
|
|
RF Connector
|
SMA
|
SMA
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SMA
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SMA
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SMA
|
|
Input Impedance
|
50
|
50
|
50
|
50
|
50
|
|
Maximum RF Power
|
4 W
|
4 W
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4 W
|
3 W
|
3 W
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|
VSWR
|
<1.5
|
<1.5
|
<1.5
|
<1.5
|
<1.5
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