DOPED LEAD TELLURIDE-BASED SEMICONDUCTORS: NEW POSSIBILITIES FOR DETECTION OF TERAHERZ RADIATION

Doping of the lead telluride and related alloys with the group III impurities results in the appearance of unique physical features of the material, such as persistent photoresponse, enhanced responsive quantum efficiency (up to 100 photoelectrons/incident photon), radiation hardness and many others. We review physical principles of operation of the photodetecting devices based on the group III doped IV–VI including possibilities of fast quenching of the persistent photoresponse, construction of a focal-plane array, new readout technique, and others. Comparison of performance of the state of the art Ge ( Ga ) and Si ( Sb ) photodetectors with their lead telluride based analogs shows that the responsivity of PbSnTe ( In ) photodetectors is by several orders of magnitude higher. High photoresponse is detected at the wavelength of 241 μm in PbSnTe ( In ), and it is possible that the photoconductivity spectrum covers all the submillimeter wavelength range.

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Lead telluride-based far-infrared photodetectors – a promising alternative to doped Si and Ge

MRS Proceedings ◽

10.1557/proc-692-h4.6.1 ◽

2001 ◽

Vol 692 ◽

Author(s):

Dmitriy Dolzhenko ◽

Ivan Ivanchik ◽

Dmitriy Khokhlov

Keyword(s):

State Of The Art ◽

Lead Telluride ◽

Far Infrared ◽

Photon Radiation ◽

Submillimeter Wavelength ◽

Promising Alternative ◽

Group Iii ◽

Physical Features ◽

Fast Quenching ◽

Physical Principles

AbstractDoping of the lead telluride and related alloys with the group III impurities results in appearance of unique physical features of the material, such as persistent photoresponse, enhanced responsive quantum efficiency (up to 100 photoelectrons/incident photon), radiation hardness and many others. We review physical principles of operation of the photodetecting devices based on the group III-doped IV-VI including possibilities of fast quenching of the persistent photoresponse, construction of a focal-plane array, new readout technique, and others. Comparison of performance of the state of the art Ge(Ga) and Si(Sb) photodetectors with their lead telluride-based analogs shows that the responsivity of PbSnTe(In) photodetectors is by several orders of magnitude higher. High photoresponse is detected at the wavelength 116 micrometers in PbSnTe(In), and it is possible that the photoconductivity spectrum covers all the submillimeter wavelength range.

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New Type of ir Photodectors Based on Lead Telluride and Related Alloys

MRS Proceedings ◽

10.1557/proc-484-295 ◽

1997 ◽

Vol 484 ◽

Author(s):

D. R. Khokhlov

Keyword(s):

Quantum Efficiency ◽

Focal Plane ◽

Lead Telluride ◽

Radiation Hardness ◽

Photon Radiation ◽

Group Iii ◽

New Type ◽

Physical Features ◽

Fast Quenching ◽

Physical Principles

AbstractDoping of the lead telluride and related alloys with the group III impurities results in an appearance of the unique physical features of a material, such as such as persistent photoresponse, enhanced responsive quantum efficiency (up to 100 photoelectrons/incident photon), radiation hardness and many others. We review the physical principles of operation of the photodetecting devices based on the group ifi-doped IV-VI including the possibilities of a fast quenching of the persistent photoresponse, construction of the focal-plane array, new readout technique, and others. The advantages of infrared photodetecting systems based on the group IIIdoped IV-VI in comparison with the modem photodetectors are summarized.

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Photoconductivity of lead telluride-based doped alloys in the submillimeter wavelength range

Physics of the Solid State ◽

10.1134/1.1641937 ◽

2004 ◽

Vol 46 (1) ◽

pp. 122-124 ◽

Cited By ~ 3

Author(s):

K. G. Kristovskii ◽

A. E. Kozhanov ◽

D. E. Dolzhenko ◽

I. I. Ivanchik ◽

D. Watson ◽

...

Keyword(s):

Wavelength Range ◽

Lead Telluride ◽

Submillimeter Wavelength

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Attenuation Measurement of Very Low-Loss Dielectric Waveguides by the Cavity Resonator Method in the Millimeter/Submillimeter Wavelength Range

10.21236/ada206458 ◽

1989 ◽

Author(s):

F. I. Shimabukuko ◽

C. Yeh

Keyword(s):

Wavelength Range ◽

Cavity Resonator ◽

Dielectric Waveguides ◽

Low Loss ◽

Submillimeter Wavelength ◽

Attenuation Measurement ◽

Resonator Method

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Microstrip-stabilized semiconductor quantum-well generator for millimeter and submillimeter wavelength range

10.1117/12.262783 ◽

1996 ◽

Author(s):

Alexandr L. Karuzskii ◽

V. A. Dravin ◽

A. S. Ignatyev ◽

A. E. Krapivka ◽

Yu. A. Mityagin ◽

...

Keyword(s):

Quantum Well ◽

Wavelength Range ◽

Submillimeter Wavelength ◽

Semiconductor Quantum Well

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Direct Immunoassays: Limitations on the Physical Principles and on the Technology State of the Art

Uses of Immobilized Biological Compounds ◽

10.1007/978-94-011-1932-0_41 ◽

1993 ◽

pp. 433-441

Author(s):

M. Alvarez-Icaza ◽

A. Gebbert ◽

R. D. Schmid

Keyword(s):

State Of The Art ◽

Physical Principles

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ESO Spectroscopic Facility

Proceedings of the International Astronomical Union ◽

10.1017/s174392131700847x ◽

2017 ◽

Vol 13 (S334) ◽

pp. 242-247

Author(s):

Luca Pasquini ◽

B. Delabre ◽

R. S. Ellis ◽

J. Marrero ◽

L. Cavaller ◽

...

Keyword(s):

High Resolution ◽

Wavelength Range ◽

Focal Plane ◽

Working Group ◽

Field Of View ◽

High Resolution Spectroscopy ◽

Wide Field ◽

Low Resolution ◽

Field Unit ◽

Integral Field

AbstractWe present the concept of a novel facility dedicated to massively-multiplexed spectroscopy. The telescope has a very wide field Cassegrain focus optimised for fibre feeding. With a Field of View (FoV) of 2.5 degrees diameter and a 11.4m pupil, it will be the largest etendue telescope. The large focal plane can easily host up to 16.000 fibres. In addition, a gravity invariant focus for the central 10 arc-minutes is available to host a giant integral field unit (IFU). The 3 lenses corrector includes an ADC, and has good performance in the 360-1300 nm wavelength range. The top level science requirements were developed by a dedicated ESO working group, and one of the primary cases is high resolution spectroscopy of GAIA stars and, in general, how our Galaxy formed and evolves. The facility will therefore be equipped with both, high and low resolution spectrographs. We stress the importance of developing the telescope and instrument designs simultaneously. The most relevant R&D aspect is also briefly discussed.

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