18, rue Nicolas Appert 91400 Orsay - France

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 deflector 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 deflector 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 serie and at right angles to give full two-dimensional scanning.


Additional information

High Resolution

ModelMaterialWavelength nmAperture mmxmmFreq (Shift) MHzPolarisationResolution T.DFDeflexion angle rangeEfficiency %Associated RF drivers
DTSX-250TeO2405-1550*4,5 x 4,5f(λ)Linear300@633nm48@633nm> 70DDSPAxx DRFAxx
DTSX-400TeO2405-1550*7,5 x 7,5f(λ)Linear500@633nm48@633nm> 70DDSPAxx DRFAxx
DTSXY-2502 Axis TeO2405-1550*4,5 x 4,5f(λ)Linear300x300@633nm41 x 41@532nm> 45DDSPAxx DRFAxx
DTSXY-4002 Axis TeO2405-1550*7,5 x 7,5f(λ)Linear500x500@633nm41 x 41@532nm> 45DDSPAxx DRFAxx
DT230-B120A0,5-UVTeO2400-4500,5 x 17,5230+/-60Linear50011,4@400nm> 50DDSPAxx DRFAxx
DT230-B120A0,5-VISTeO2450-6700,5 x 17,5230+/-60Linear50015@532nm> 50DDSPAxx DRFAxx

Low Resolution

ModelMaterialWavelength (nm)Aperture mm²Frequency shift (MHz)PolarisationResolution TΔFDeflexion angle (mrd)Diffraction Efficiency (%)*Associated RF drivers
MQ200-B30A1,5-244.266.BrFused Silica244-2661.5 x 2200+/-15Linear51,3@266nm> 60DDSPAxx DRFAxx
MQ110-B30A1-UVFused Silica325-4251 x 2110+/-15Linear101.8@355nm> 60DDSPAxx DRFAxx
MT200-B50A0,5-400.442TeO2400-4420,5 x 2200+/-25Linear/random235,4 @458nm> 80DDSPAxx DRFAxx
MT200-B100A0,5-VISTeO2450-7000,5 x 2200+/-50Linear/random4712,6@532nm> 70@633nmDDSPAxx DRFAxx
MT110-B50A1-VISTeO2450-7001 x 2110+/-25Linear/random236,3@532nm> 65@633nmDDSPAxx DRFAxx
MT110-B50A1,5-VISTeO2450-7001,5 x 2110+/-25Linear/random236,3@532nm> 65@633nmDDSPAxx DRFAxx
MT80-B30A1-VISTeO2450-7001 x 280+/-15Linear/random143,8@532nm> 65DDSPAxx DRFAxx
MT80-B30A1,5-VISTeO2450-7001,5 x 280+/-15Linear/random143,8@532nm>65DDSPAxx DRFAxx
MT200-B100A0,5-800TeO2750-9500,5 x 2200+/-50Linear/random4718,6 @785nm> 60DDSPAxx DRFAxx
MT200-B40A1-800TeO2750-9501 x 2200+/-20Linear/random197,4 @800nm> 70@785nmDDSPAxx DRFAxx
MT350-B120A0.12-800TeO2750-9500,12 x 1350+/-60Linear/random2822,8@800nm> 60DDSPAxx DRFAxx
MT250-B100A0,5-800TeO2750-9500,5 x 2250+/-50Linear/random4719@800nm> 60DDSPAxx DRFAxx
MT200-B100A0,5-800TeO2750-9500,5 x 2200+/-50Linear/random4719@800nm> 60@785nmDDSPAxx DRFAxx
MT110-B50A1-IRTeO2700-11001 x 2110+/-25Linear/random239,5@800nm> 60@785nmDDSPAxx DRFAxx
MT110-B50A1,5-IRTeO2700-11001,5 x 2110+/-25Linear/random239,5@800nm> 60@785nmDDSPAxx DRFAxx
MT80-B30A1-IRTeO2700-11001 x 280+/-15Linear/random145,7@800nm> 70@785nmDDSPAxx DRFAxx
MT80-B30A1,5-IRTeO2700-11001,5 x 280+/-15Linear/random145,7@800nm> 70@765nmDDSPAxx DRFAxx
MT200-B100A0,5-1064TeO2980-11000,4 x 2200+/-50Linear/random4725,3@1064nm> 35DDSPAxx DRFAxx
MT200-B100A0,2-1064TeO2980-11000,2 x 1200+/-50Linear/random4725,3@1064nm> 60DDSPAxx DRFAxx
MT110-B50A1-1064TeO2980-11001 x 2110+/-25Linear/random2312,6@1064nm> 55DDSPAxx DRFAxx
MT80-B30A1-1064TeO2980-11001 x 280+/-15Linear/random147,6@1064nm> 60DDSPAxx DRFAxx
MT80-B30A1,5-1064TeO2980-11001,5 x 280+/-15Linear/random147,6@1064nm> 60DDSPAxx DRFAxx