Upconversion based spectral imaging in 6 to 8 μm spectral regime

Saher Junaid; Peter Tidemand-Lichtenberg; Christian Pedersen

doi:10.1117/12.2250538

Upconversion based spectral imaging in 6 to 8 μm spectral regime

Saher Junaid, Peter Tidemand-Lichtenberg, Christian Pedersen

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

Spectral imaging in the 6 to 8μm range has great potential for medical diagnostics. Here a novel technique based on frequency upconversion of the infrared images to the near visible for subsequent acquisition using a Si-CCD camera is investigated. The upconversion unit consists of an AgGaS2 crystal and a 1064nm diode pumped solid state laser. A globar is used as mid-infrared illumination source. Acquired images contain both spectral and spatial information. Angle tuning of the nonlinear crystal is exploited to scan the phase match condition, which allows to cover the full spectral range of interest for the full field of view. Simulated images are created and compared with the measured images.

Original language	English
Title of host publication	Proceedings of SPIE
Number of pages	7
Volume	10088
Publisher	SPIE - International Society for Optical Engineering
Publication date	2017
Article number	100880I
DOIs	https://doi.org/10.1117/12.2250538
Publication status	Published - 2017
Event	Nonlinear Frequency Generation and Conversion: Materials and Devices XVI: SPIE Conference 10088 - The Moscone Center, San Francisco, United States Duration: 28 Jan 2017 → 2 Feb 2017 Conference number: 10088

Conference

Conference	Nonlinear Frequency Generation and Conversion: Materials and Devices XVI
Number	10088
Location	The Moscone Center
Country	United States
City	San Francisco
Period	28/01/2017 → 02/02/2017

Series	Proceedings of S P I E - International Society for Optical Engineering
ISSN	0277-786X

Bibliographical note

Copyright 2017 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Keywords

Sum frequency generation (SFG)
Birefringence
Non-collinear phase matching
Spectral imaging

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Cite this

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title = "Upconversion based spectral imaging in 6 to 8 μm spectral regime",

abstract = "Spectral imaging in the 6 to 8μm range has great potential for medical diagnostics. Here a novel technique based on frequency upconversion of the infrared images to the near visible for subsequent acquisition using a Si-CCD camera is investigated. The upconversion unit consists of an AgGaS2 crystal and a 1064nm diode pumped solid state laser. A globar is used as mid-infrared illumination source. Acquired images contain both spectral and spatial information. Angle tuning of the nonlinear crystal is exploited to scan the phase match condition, which allows to cover the full spectral range of interest for the full field of view. Simulated images are created and compared with the measured images.",

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Junaid, S, Tidemand-Lichtenberg, P & Pedersen, C 2017, Upconversion based spectral imaging in 6 to 8 μm spectral regime. in Proceedings of SPIE. vol. 10088, 100880I , SPIE - International Society for Optical Engineering, Proceedings of S P I E - International Society for Optical Engineering, Nonlinear Frequency Generation and Conversion: Materials and Devices XVI, San Francisco, United States, 28/01/2017. https://doi.org/10.1117/12.2250538

Upconversion based spectral imaging in 6 to 8 μm spectral regime. / Junaid, Saher; Tidemand-Lichtenberg, Peter ; Pedersen, Christian.

Proceedings of SPIE. Vol. 10088 SPIE - International Society for Optical Engineering, 2017. 100880I (Proceedings of S P I E - International Society for Optical Engineering).

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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