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Acousto Optics

Deflectors & Variable Frequency Shifters

Description

Deflectors & Variable Frequency Shifters

A Bragg configuration gives a single first order output beam, which intensity is directly linked to the power of RF control signal, and which angle is directly linked to the RF frequency.

By varying the frequency, the output laser beam angle is modified. A deflector is used to scan a laser beam over a range of angles, or to control with accuracy the output angle of the laser beam. By varying the frequency, the first order beam is also frequency shifted by the amount of the RF carrier frequency : it acts like a variable frequency shifter.

The main parameters to qualify a de-flector are 1.Deflection angle range and 2.Resolution. The deflection angle range is the maximum angle variation of the laser beam : it is linked to the frequency range of the device. The resolution of a deflection is the number of distinct directions which can be ad- dressed by the deflector : it is linked to the deflection angle range and laser divergence.
Two deflectors can be used in series and at right angles to give full two-dimensional scanning.

High Resolution
Model Material Wavelengthnm Aperturemmxmm Freq(Shift) MHz Polarisation ResolutionT.DF Deflexionangle range Efficiency%
DTSX-250 TeO2 375-1600* 4,5 x 4,5 f(?) Linear 300@633nm 48@633nm > 70
DTSX-400 TeO2 375-1600* 7,5 x 7,5 f(?) Linear 500@633nm 48@633nm > 70
DTSXY-250 2 Axis TeO2 375-1600* 4,5 x 4,5 f(?) Linear 300x300@633nm 41 x 41@532nm > 45
DTSXY-400 2 Axis TeO2 375-1600* 7,5 x 7,5 f(?) Linear 500x500@633nm 41 x 41@532nm > 45
DT230-B120A0,5-UV TeO2 400-450 0,5 x 17,5 230+/-60 Linear 500 11,4@400nm > 50
DT230-B120A0,5-VIS TeO2 450-670 0,5 x 17,5 230+/-60 Linear 500 15@532nm > 50


Low Resolution
Model Material Wavelengthnm Aperturemmxmm Freq(Shift) MHz Polarisation ResolutionT?F Deflexionangle range mrd Efficiency%
MQ200-B30A1.5-244.266-Br Fused Silica 244-266 1.5 x 2 200+/-15 Linear 5 1,3@266nm > 60
MQ110-B30A1-UV Fused Silica 325-425 1 x 2 110+/-15 Linear 10 1.8@355nm > 60
MT200-B50A0,5-400.442 TeO2 400-442 0,5 x 2 200+/-25 Linear/random 23 5,4 @458nm > 80
MT200-B100A0,5-VIS TeO2 450-700 0,5 x 2 200+/-50 Linear/random 47 12,6@532nm > 70@633nm
MT110-B50A1-VIS TeO2 450-700 1 x 2 110+/-25 Linear/random 23 6,3@532nm > 65@633nm
MT110-B50A1,5-VIS TeO2 450-700 1,5 x 2 110+/-25 Linear/random 23 6,3@532nm > 65@633nm
MT80-B30A1-VIS TeO2 450-700 1 x 2 80+/-15 Linear/random 14 3,8@532nm > 65
MT80-B30A1,5-VIS TeO2 450-700 1,5 x 2 80+/-15 Linear/random 14 3,8@532nm > 65
MT200-B100A0,5-800 TeO2 750-950 0,5 x 2 200+/-50 Linear/random 47 18,6 @785nm > 60
MT200-B40A1-800 TeO2 750-950 1 x 2 200+/-20 Linear/random 19 7,4 @800nm > 70@785nm
MT350-B120A0,12-800 TeO2 750-950 0,2 x 1 350+/-60 Linear/random 28 22,8@800nm > 60
MT250-B100A0,5-800 TeO2 750-950 0,5 x 2 250+/-50 Linear/random 47 19@800nm > 60
MT200-B100A0,5-800 TeO2 750-950 0,5 x 2 200+/-50 Linear/random 47 19@800nm > 60@785nm
MT110-B50A1-IR TeO2 700-1100 1 x 2 110+/-25 Linear/random 23 9,5@800nm > 60@785nm
MT110-B50A1,5-IR TeO2 700-1100 1,5 x 2 110+/-25 Linear/random 23 9,5@800nm > 60@785nm
MT80-B30A1-IR TeO2 700-1100 1 x 2 80+/-15 Linear/random 14 5,7@800nm > 70@785nm
MT80-B30A1,5-IR TeO2 700-1100 1,5 x 2 80+/-15 Linear/random 14 5,7@800nm > 70@765nm
MT200-B100A0,5-1064 TeO2 980-1100 0,4 x 2 200+/-50 Linear/random 47 25,3@1064nm > 35
MT200-B100A0,2-1064 TeO2 980-1100 0,2 x 1 200+/-50 Linear/random 47 25,3@1064nm > 60
MT110-B50A1-1064 TeO2 980-1100 1 x 2 110+/-25 Linear/random 23 12,6@1064nm > 55
MT110-B30A1,5-1064 TeO2 960-1100 1,5 x 2 110+/-15 Linear/random 14 7,6@1064nm > 60
MT80-B30A1-1064 TeO2 980-1100 1 x 2 80+/-15 Linear/random 14 7,6@1064nm > 60
MT80-B30A1,5-1064 TeO2 980-1100 1,5 x 2 80+/-15 Linear/random 14 7,6@1064nm > 60

Applications

High sensitivity applications

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