Acousto-Optic Tunable Filters for Imaging Applications in the 2-4~μm with Low RF Drive Power

• Authors: S. Valle , J. Ward , C. Pannell , N. Johnson
• Languages of publication: EN

Abstracts

EN

The λ^{2} dependence on acoustic field intensity (and hence RF drive power) can render large aperture acousto-optic tunable filters impractical for many applications beyond about 2 μm. One potential technique for reducing the RF drive-power requirement is to configure an acousto-optic tunable filter such that the interaction region is at acoustic resonance. We describe an acousto-optic tunable filter that operates at resonance and present an analysis of the predicted performance. In addition, we address the practical issues in deploying such a scheme. Finally, we present results of a prototype "resonant acousto-optic tunable filter" operating in the 1-2 μm region.

Keywords

EN

62.20.-x; 78.20.hb; 62.40.+i

Discipline

• 62.20.-x: Mechanical properties of solids
• 62.40.+i: Anelasticity, internal friction, stress relaxation, and mechanical resonances(for materials treatment effects on anelasticity, see 81.40.Jj in materials science)
• 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)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 1
• Pages: 58-59

Dates

published

2015-01

Contributors

author

S. Valle

• Gooch and Housego (UK) Ltd, Dowlish Ford, Ilminster, Somerset, TA19 0PF, UK
• Optoelectronics Group, School of Engineering, University of Glasgow, Glasgow G12 8LT, UK

author

J. Ward

• Gooch and Housego (UK) Ltd, Dowlish Ford, Ilminster, Somerset, TA19 0PF, UK

author

C. Pannell

• Gooch and Housego (Orlando), 4632 36th street, Orlando, Fl 32811, USA

author

N. Johnson

• Optoelectronics Group, School of Engineering, University of Glasgow, Glasgow G12 8LT, UK

References

• [1] J. Xu, R. Stroud, Acousto-Optic Devices, Wiley, Hoboken 1992
• [2] V. B. Voloshinov, Opt. Eng. 31, 2089 (1992), doi: 10.1117/12.58877
• [3] I.C. Chang, Appl. Phys. Lett. 25, 370 (1974), doi: 10.1063/1.1655512
• [4] I.C. Chang, in: Proc. First Army Research Laboratory AOTF Workshop, Ed. N. Gupta, Army Research Laboratory Report ARL-SR-54, Army Research Laboratory, Adelphi (MD) 1997, p. 21

Identifiers

DOI

10.12693/APhysPolA.127.58