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Extension of Usable Spectral Range of Peltier Cooled Photodetectors

100%

Piotrowski A., Piotrowski J., Gawron W., Pawluczyk J., Pedzinska M.

Acta Physica Polonica A

2009

vol. 116

issue S

S-52-S-55

This paper provides update on development of the Peltier cooled detectors optimized for wavelengths above 13 μm. Initially, the devices made by Vigo were mostly used for uncooled detection of CO_{2} laser radiation. Over the years the performance and speed of response has been steadily improved. At present the uncooled or Peltier cooled photodetectors can be used for sensitive and fast response detection in the mid-wavelength and long-wavelength infrared spectral range. The devices have found important applications in IR spectrometry, quantum cascade laser based gas analyzers, laser radiation alerters and many other IR systems. Recent efforts were concentrated on the extension of useful spectral range to > 13 μm, as required for its application in Fourier transform IR spectrometers. This was achieved with improved design of the active elements, use of monolithic optical immersion technology, enhanced absorption of radiation, dedicated electronics, series connection of small cells in series, and last but not least, applying more efficient Peltier coolers. Practical devices are based on the complex HgCdTe heterostructures grown on GaAs substrates with metal-organic chemical vapor deposition technique with immersion lens formed by micromachining in the GaAs substrates. The results are very encouraging. The devices cooled with miniature 4 stage Peltier coolers mounted in TO-8 style housings show significant response at wavelength exceeding 16 μm.

Growth of MOCVD HgCdTe heterostructures for uncooled infrared photodetectors

73%

Piotrowski A., Madejczyk P., Gawron W., Kłos K., Pawluczyk J., Grudzień M., Piotrowski J., Rogalski A.

2005

vol. 53

issue 2

Investigation of Free Space Optical Detection Module Operating at the Wavelength Range of 8-12 μm

73%

Gutowska M., Nowakowski M., Bielecki Z., Mikolajczyk J., Szabra D., Paliwoda R., Pedzinska M., Pawluczyk J., Gawron W.

issue 6

1143-1147

The paper presents the construction and test results of a long-term radiation detector module for free space optical communication operated at the wavelength range of 8-12 μm. In the module a Polish detector manufactured in the company Vigo System S.A. was applied. High sensitivity of the detection module was achieved through a multi-layered heterostructure HgCdTe with immersion lens, which is optimized for the radiation detection at the wavelength of 10 μm. Detector noises were reduced as a result of detector cooling by means of four-stage thermoelectric cooler. The developed detection module is dedicated to design a next-generation optical data link. The link will be characterized by a greater range in difficult weather conditions in relation to the currently offered links operating at the shorter wavelengths.

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2 Acta Physica Polonica A

1 Bulletin of the Polish Academy of Sciences: Technical Sciences

1 2010

1 2009

1 2005

3 Gawron W.

3 Pawluczyk J.

2 Pedzinska M.

2 Piotrowski A.

2 Piotrowski J.

1 Bielecki Z.

1 Grudzień M.

1 Gutowska M.

1 Kłos K.

1 Madejczyk P.

1 Mikolajczyk J.

1 Nowakowski M.

1 Paliwoda R.

1 Rogalski A.

1 Szabra D.

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Extension of Usable Spectral Range of Peltier Cooled Photodetectors

Growth of MOCVD HgCdTe heterostructures for uncooled infrared photodetectors

Investigation of Free Space Optical Detection Module Operating at the Wavelength Range of 8-12 μm