A complete family of E-O modulators, used for modulating laser beams, for intensity or frequency or phase modulation, consists of non-linear optics (crystals) utilizing the transverse Pockels effect (low voltage). The crystals span the entire laser spectrum using ADP, AD*P, KDP, KD*P, ADA, AD*A, RDA, CD*A, BBO, LBO, KTP, KnbO 3, LiTaO3. Special AR coating in UV, visible or IR region are available upon request.
Precisely oriented, the crystals are mounted in thick-walled aluminum cylinders to minimize thermal gradients. Low absorption index matching fluid, combined with a fluid path length of less than 2mm, ensures high optical power transmission capability with no mode distortion or blooming
EO-10 SERIES
mid IR (600-4500nm) LiTaO3
SPECIFICATIONS:
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EO-10
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EO-11
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EO-12
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EO-13
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EO-14
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EO-15
|
|
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Half wave voltage @ 488 nm
|
54V
|
82V
|
36V
|
72V
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72V
|
144V
|
|
Half wave voltage @ 514 nm
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57V
|
87V
|
38V
|
76V
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76V
|
152V
|
|
Half wave voltage @ 633 nm
|
70V
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107V
|
47V
|
94V
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94V
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188V
|
|
Half wave voltage @ 1064 nm
|
117V
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180V
|
79V
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158V
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158V
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316V
|
|
Half wave voltage @ 2000 nm
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220V
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330V
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148V
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296V
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296V
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592V
|
|
Aperture
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1mm
|
1mm
|
2.2mm
|
4.5mm
|
2.2mm
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4.5mm
|
|
Capacitance pF
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n/a
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n/a
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57pF
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29pF
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29pF
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114pF
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Transmission
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85%
|
85%
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85%
|
85%
|
85%
|
85%
|
|
Differential Propoation Delay
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0.4 ns
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1.2 ns
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2.7 ns
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1.4 ns
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1.4 ns
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1.4 ns
|
|
Contrast Ratio @ 633 nm
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100:1
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100:1
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100:1
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50:1
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100:1
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100:1
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|
Contrast Ratio @ 1064 nm
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150:1
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150:1
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150:1
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100:1
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150:1
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150:1
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Models EO-10 & EO-11 are HIGH SPEED modulators of traveling wave type which are used for wide bandwidth (DC to 1000 MHz) high frequency modulation, for AMPLITUDE modulating and PHASE modulating (high 48 mrad/V phase sensitivity). The modulators can handle RF power up to 10 watts and CW optical power up to 1 watt @ 1064nm.
Models EO-10-BR is a Brewster E-O PHASE modulator, which assures the lowest possible loss over the widest optical spectrum (600-3500nm). Aperture is 2mm. The configuration of the modulator can be like a resonant electro-optic modulator type or like a traveling wave type phase modulator with a bandwidth exceeding 1000 MHz.
Material: Lithium Tantalate crystal (LiTaO 3)
EO-20 SERIES
ADP & D-ADP
(45° X cut)1
(400- 1100 nm ADP & KDP)
SPECIFICATIONS:
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EO-20
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EO-21
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EO-22
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EO-23
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EO-26
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EO-28
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EO-29
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|
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Spectral range nm
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400-800
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400-1100
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400-800
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400-1100
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400-800
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400-800
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400-1100
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|
Half wave voltage @ 488 nm
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90V
|
65V
|
90V
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65V
|
90V
|
180V
|
130V
|
|
Half wave voltage @ 633 nm
|
115V
|
85V
|
115V
|
85V
|
115V
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230V
|
170V
|
|
Phase sensitivity @ 633 nm
|
27
|
36
|
27
|
36
|
27
|
13
|
18
|
|
Capacitance pF
|
180
|
250
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a b
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a b
|
a
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80
|
120
|
|
Transmission @ 633nm
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>90%
|
>90%
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>90%
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>90%
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>90%
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>90%
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>90%
|
|
Frequency Response (-3 dB)
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A
|
A
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B C D
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B C D
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E
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C
|
C
|
|
Aperture 2.5mm (3.5mm available)
|
|||||||
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Dimensions: 1.97" Dia × 8.90" L (EO-28 & EO-29: 1.97" Dia × 4.98" L)
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|||||||
1The transverse mode: The electric field is applied normal to the direction of propagation of the light beam. The optical propagation direction for amplitude modulation is at an angle 450 to the Y or Z axis while the electric field is applied along the X axis.
a) Transmission line 50 ohm
b) Transmission line 100 ohm
A) DC-10 MHz
B) DC-25 MHz
C) DC-50 MHz
D) DC-100 MHz
E) Risetime 2 ns or less
EO-300 SERIES
Visible region (360-1100nm) KD*P
SPECIFICATIONS:
|
EO-320
|
EO-327
|
EO-331
|
EO-332
|
EO-333
|
EO-334
|
EO-361
|
EO-362
|
|
|
Half wave voltage @ 633 nm
|
750V
|
120V
|
750V
|
562V
|
450V
|
225V
|
900V
|
450V
|
|
Half wave voltage @ 1064 nm
|
1255V
|
188V
|
1255V
|
941V
|
750V
|
376V
|
1507V
|
750V
|
|
Aperture
|
2.5mm
|
2.5mm
|
3mm
|
3mm
|
3mm
|
3mm
|
6mm
|
6mm
|
|
Capacitance pF
|
11pF
|
90pF
|
14pF
|
18pF
|
23pF
|
45pF
|
23pF
|
45pF
|
|
50 ohm
|
n/a
|
yes
|
n/a
|
n/a
|
n/a
|
yes
|
n/a
|
n/a
|
|
100 ohm
|
n/a
|
yes
|
n/a
|
n/a
|
n/a
|
yes
|
n/a
|
n/a
|
|
Transmission
|
85%
|
85%
|
85%
|
85%
|
85%
|
85%
|
85%
|
85%
|
|
Connectors
|
pins
|
2 BNC
|
MHV
|
MHV
|
MHV
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2 BNC
|
MHV
|
MHV
|
|
Diameter
|
25mm
|
50mm
|
50mm
|
50mm
|
50mm
|
50mm
|
50mm
|
50mm
|
|
Length
|
38mm
|
225mm
|
55mm
|
65mm
|
75mm
|
125mm
|
75mm
|
125mm
|
AMPLITUDE modulator, optimized for intensity modulation. PHASE modulator option available
Impedances available:
a) lumped capacitive, comes with two BNC connectors
b) transmission line version (50 ohm & 100 ohm), come with two triax and one bias connector
The modulator has some piezo-electric resonances in the 100-800 KHz fundamental frequencies (20% more than devices made from LiTaO 3)
The modulator can be converted into a POLARIZATION ROTATOR by adding an internal waveplate.
RESONANT ELECTRO-OPTIC MODULATORS
Lithium Tantalate (LiTaO3)
UV (200-360nm) BBO
Visible region (360-760nm) KD*P
SPECIFICATIONS:
|
Wavelength
|
0.55-3.0 um
|
|
Aperture
|
2mm
|
|
RF Bandwidth
|
1-2%
|
|
Max RF Power
|
2 watt
|
|
Max Optical Power
|
1 watt/mm2
|
|
Modulation Depth
|
>0.1 Rad/Volt
|
|
Impedance
|
50 ohm
|
|
Half wave voltage
|
<20v
|
|
Connectors
|
SMA
|
|
Max VSWR
|
1.5:1
|
|
Efficient power transfer of the electrical energy to the electro-optic crystal.
|
|
Model EO-10-REM-BR is a Brewster resonant E-O PHASE modulator, which assures the lowest possible loss over the widest optical spectrum (500-3500nm). Aperture is 2mm. The configuration of the modulator can be like a resonant electro-optic modulator type or like a traveling wave type phase modulator with a bandwidth exceeding 1000 MHz.
Material: Lithium Tantalate crystal (LiTaO 3)
