Infrared spectral imaging and detection

Current research projects

In the recent years, an increasing interest in mid-IR imaging and spectroscopy has emerged, based on many new applications such as:

  1. Medical applications
  2. Environmental monitoring
  3. Food analysis
  4. Combustion analysis
  5. Civil and defense applications

While much advance has been made in the development of novel light sources, in terms of Quantum Cascaded Lasers, Optical Parametric Oscillators, and fiber based Super-K sources, not much progress has been made in terms of low noise detector systems.

Traditional IR detectors are hampered by substantial noise, both in terms of electronic dark noise and read noise. As a result IR detection needs cryogenic cooling for low noise operation, resulting in high operations cost limiting the applicability for real life applications.

At DTU Fotonik, the Optical Sensor Technology Group has developed a new concept for IR light detection, where IR light, rather than being detected directly in the IR spectral region, is converted to near visible light where the light is easily detected with Si-based cameras resulting in very low noise system performance, even at room temperature.

Conversion concept

The patented technology has been developed into a proof of concept device, capable of detecting very week signals with unprecedented signal to noise ratios event at room temperature. The new technology even has build-in spectral functionality allowing for multispectral imaging in the mid-IR spectral region, where many substances has a very distinct spectral fingerprint.

Upconversion results

            

This new up-conversion device is considered as a platform technology, enabling the development of a new class of compact, low cost detection systems for a wide range of applications within IR spectroscopy.

See also homepage for ITN project www.midtech-itn.eu  

 

Contact

Jeppe Seidelin Dam (researcher), jdam@fotonik.dtu.dk

Peter Tidemand-Licthenberg (assosiate professor), ptli@fotonik.dtu.dk

Christian Pedersen (gruppeleder), chrp@fotonik.dtu.dk

Lasse Høgstedt (Ph.D. student), lhog@fotonik.dtu.dk

Publications

ref1  Q. Hu, J. S. Dam, C. Pedersen, and P. Tidemand-Lichtenberg
“High resolution mid-IR spectrometer based on frequency up-conversion “
Optics Letters, 37, 5232-5234 (2012)

http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-24-5232

 
 ref2  J. S. Dam, P. Tidemand-Lichtenberg, C. Pedersen

“Room temperature mid-IR single photon spectral imaging” Nature Photonics, 6, 788-793 (2012)

http://www.nature.com/nphoton/journal/v6/n11/full/nphoton.2012.231.html

 ref3   L. Høgstedt, O. B. Jensen, J. S. Dam, C. Pedersen, P. Tidemand-Lichtenberg

 “500 nm continuous wave tunable single-frequency mid-IR light source for C-H spectroscopy” Laser Physics, 22, 1676-1681 (2012)

http://link.springer.com/article/10.1134%2FS1054660X12110047

 ref4  J. S. Dam, C. Pedersen, P. Tidemand-Lichtenberg

“Theory for upconversion of incoherent images”

Optics Express, 20, 1475-1482 (2012)

http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-2-1475

 ref5

J. S. Dam, C. Pedersen and P. Tidemand-Lichtenberg

“High-resolution two-dimensional image upconversion of incoherent light”

Optics Letters 35, 3796-3798 (2010)

http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-22-3796

Selected for “News and Views” in Nature Photonics 5, 75-76 February (2011)

http://www.nature.com/nphoton/journal/v5/n2/full/nphoton.2011.9.html

 ref6   C. Pedersen, E. Karamehmedović, J. S. Dam and P. Tidemand-Lichtenberg,

“Enhanced 2D-image upconversion using solid-state lasers”,

Optics Express 23, 20885-20890 (2009)

http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-23-20885

 ref7  E. Karamehmedović, C. Pedersen, O. B. Jensen and P. Tidemand-Lichtenberg,

“Nonlinear beam clean-up using resonantly enhanced sum-frequency mixing”,

Appl. Phys. B 96, 409-413 (2009)

http://link.springer.com/article/10.1007%2Fs00340-009-3543-7?LI=true

Media appearance

Laser Focus World, January 2013:

 

http://www.laserfocusworld.com/articles/print/volume-49/issue-01/features/photon-counting--upconversion-imager-measures-single-mid-ir-phot.html

 

 

Videnskabens verden: Kamera sladrer om lungebetændelse, 13. January 2013:

 

 http://podcast.dr.dk/P1/videnskabens_verden/2013/videnskabens_verden_1301151403.mp3

 

 

LifeSciences Insight 4, pp 8 – 9, December 2012:

 

http://issuu.com/raskmedia/docs/lsi_4-2012/9#

 

 

Årets Danske Forskningsresultat 2012, Videnskab.dk, December 2012:

 

http://videnskab.dk/videnskabdk/arets-danske-forskningsresultat-glade-vindere-indtog-syddansk-universitet

 

 

Ingeniøren, Ing.dk November 2012:

 

http://ing.dk/artikel/133888-dtu-ivaerksaettere-dominerer-i-global-innovationskonkurrence

 

 

Videnskab.dk, September 2012:

 

http://videnskab.dk/teknologi/dansk-kamera-kan-fotografere-kemiske-stoffer

 

 

Science Nordic, September 2012:

 

http://sciencenordic.com/new-camera-detects-chemicals

 

 

Go’morgen P3, September 2012:

 

http://www.dr.dk/p3/programmer/gomorgen-p3/2012/09/19/nyt-objektiv-afslorer-hudkraeft-og-fordaervet-kod-med-det-samme

 

On-air interview September 17, 2012

 

 

Jyllandsposten, September 2012:

 

http://jyllands-posten.dk/nyviden/article4844105.ece

 

 

Optics and Photonics Focus, May 2011:

 

http://opfocus.org/index.php?topic=story&v=13&s=5

 

 

Medico Innovations nyhedsbrev, February 2011:

 

http://www.medico-innovation.dk/wp-content/uploads/2011/02/01-2011-Nyhedsbrev1.pdf 

 

 

New Scientist, December 2010:

 

http://www.newscientist.com/article/dn19840-infrared-addon-could-let-standard-cameras-see-cancer.html

 

 

Laser Focus World, February 2010:

 

http://www.laserfocusworld.com/articles/2010/01/nonlinear-optics-.html

 

L. Høgstedt, O. B. Jensen, J. S. Dam, C. Pedersen, P. Tidemand-Lichtenberg

“500 nm continuous wave tunable single-frequency mid-IR light source for C-H spectroscopy”

Laser Physics, 22, 1676-1681 (2012)

http://link.springer.com/article/10.1134%2FS1054660X12110047

L. Høgstedt, O. B. Jensen, J. S. Dam, C. Pedersen, P. Tidemand-Lichtenberg

“500 nm continuous wave tunable single-frequency mid-IR light source for C-H spectroscopy”

Laser Physics, 22, 1676-1681 (2012)

http://link.springer.com/article/10.1134%2FS1054660X12110047