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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 26 — Dec. 22, 2008
  • pp: 21505–21511

Efficient double-filtering with a single acoustooptic tunable filter

Jang-Woo You, Jeongho Ahn, Soohyun Kim, and Daesuk Kim  »View Author Affiliations


Optics Express, Vol. 16, Issue 26, pp. 21505-21511 (2008)
http://dx.doi.org/10.1364/OE.16.021505


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Abstract

We describe an efficient double-filtering method that uses a single acousto-optic tunable filter (AOTF) to improve the spectral resolution and intrinsic sidelobes for the spectral domain analysis systems. Double filtering with a single AOTF is realized by applying a unique feedback scheme based on the fact that incident light can be diffracted into two orthogonally polarized beams of light by an AOTF. Our theoretical explanation attempts to address and satisfy the main prerequisite for the proposed idea. The experimental results confirm that the proposed method achieves a 20% to 30% improvement in spectral resolution and 10 dB suppression of sidelobes with minimized light loss for the extraordinary incident light. We believe that the results of using an AOTF are comparable to the results achieved with two AOTFs in tandem.

© 2008 Optical Society of America

OCIS Codes
(230.1040) Optical devices : Acousto-optical devices
(300.6190) Spectroscopy : Spectrometers

ToC Category:
Optical Devices

History
Original Manuscript: September 12, 2008
Revised Manuscript: November 26, 2008
Manuscript Accepted: November 29, 2008
Published: December 15, 2008

Citation
Jang-Woo You, Jeongho Ahn, Soohyun Kim, and Daesuk Kim, "Efficient double-filtering with a single acousto-optic tunable filter," Opt. Express 16, 21505-21511 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-26-21505


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