Acousto-Optical Tunable Transmissive Grating Beam Splitter

• Authors: A. Dieulangard , J. Kastelik , S. Dupont , J. Gazalet
• Languages of publication: EN

Abstracts

EN

We present a tunable transmissive grating beam splitter for multiple laser line separation based on acousto-optic interaction in tellurium dioxide. Acousto-optic devices are well known for light modulation, frequency shifting, filtration or deflection. Unlike the classical operating modes of acousto-optic devices, we consider the simultaneous diffraction of several optical wavelengths by a single ultrasonic frequency. The device is based on the Bragg anisotropic interaction in the specific "tangent phase matching" configuration. The acousto-optic interaction takes place with a single ultrasonic frequency and the diffraction efficiency remains high over a wide optical spectral range. The different diffracted beams are then angularly well separated, due to the slow velocity of the ultrasonic wave propagating in tellurium dioxide. The optical bandwidth is directly related to the operating ultrasonic frequency. Numerical calculations were carried out to determine the main parameters of the device: operating ultrasonic frequency, optical bandwidth, tunability range, crystalline cut and transducer length. A practical device has been designed for visible spectrum. Experimental results are presented as for example a spectral bandwidth from 450 nm to 550 nm with a carrier frequency f_0=125 MHz.

Keywords

EN

78.20.hb; 42.79.Jq; 43.35.Sx

Discipline

• 78.20.hb: Piezo-optical, elasto-optical, acousto-optical, and photoelastic effects(see also 43.35.Sx Acousto-optical effects, optoacoustics, acoustical visualization, acoustical microscopy, and acoustical holography—in Acoustics Appendix; for acousto-optical devices, see 42.79.Jq, and 43.38.Zp—in Acoustics Appendix)
• 42.79.Jq: Acousto-optical devices(see also 43.38.Zp—in Acoustics Appendix)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 1
• Pages: 66-68

Dates

published

2015-01

Contributors

author

A. Dieulangard

• Université Lille Nord de France, 59000 Lille, France
• Université de Valenciennes et du Hainaut-Cambrésis, IEMN-DOAE, Le Mont Houy, 59313 Valenciennes Cedex 9, France
• CNRS, UMR 8520, 59650 Villeneuve d'Ascq, France
• AA Opto-electronic SA, 18, rue Nicolas Appert, 91898 Orsay, France

author

J. Kastelik

• Université Lille Nord de France, 59000 Lille, France
• Université de Valenciennes et du Hainaut-Cambrésis, IEMN-DOAE, Le Mont Houy, 59313 Valenciennes Cedex 9, France
• CNRS, UMR 8520, 59650 Villeneuve d'Ascq, France

author

S. Dupont

• Université Lille Nord de France, 59000 Lille, France
• Université de Valenciennes et du Hainaut-Cambrésis, IEMN-DOAE, Le Mont Houy, 59313 Valenciennes Cedex 9, France
• CNRS, UMR 8520, 59650 Villeneuve d'Ascq, France

author

J. Gazalet

• Université Lille Nord de France, 59000 Lille, France
• Université de Valenciennes et du Hainaut-Cambrésis, IEMN-DOAE, Le Mont Houy, 59313 Valenciennes Cedex 9, France
• CNRS, UMR 8520, 59650 Villeneuve d'Ascq, France

References

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Identifiers

DOI

10.12693/APhysPolA.127.66