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  Arrayed Telecom-Wavelength Compatible THz n-i-pn-i-p Super lattice Photomixers for Spectroscopy Applications

Preu, S., Bauerschmidt, S., Malzer, S., Doehler, G. H., Lu, H., Gossard, A. C., et al. (2011). Arrayed Telecom-Wavelength Compatible THz n-i-pn-i-p Super lattice Photomixers for Spectroscopy Applications. In TERAHERTZ AND MID INFRARED RADIATION: GENERATION, DETECTION AND APPLICATIONS (pp. 139-146). PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS: SPRINGER.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-6A71-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-6A72-2
Genre: Conference Paper

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 Creators:
Preu, S.1, 2, Author              
Bauerschmidt, S.2, 3, Author              
Malzer, S.4, Author              
Doehler, G. H.5, Author              
Lu, H.6, Author
Gossard, A. C.6, Author
Wang, L. J.1, Author              
Affiliations:
1Max Planck Fellow Group, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364711              
2International Max Planck Research School, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364697              
3Russell Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364721              
4Guests, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364696              
5External Organizations, ou_persistent22              
6external, ou_persistent22              

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Free keywords: RADIATIONBiophysics; Physics;
 Abstract: We report on the progress of room-temperature operating, continuous-wave, tunable n-i-pn-i-p superlattice THz photomixers, compatible with 1.55 mu m telecom laser systems. An output power of 0.65 mu W at 1 THz has been achieved at a photocurrent of 9.5 mA, using a broadband antenna. The spectral power is at a level where high resolution spectroscopy becomes attractive. This is demonstrated by measuring the absorption spectrum of water vapor between 0.4 and 1.6 THz. We constructed an array of 4 mutually coherent photomixers for higher output power and spatial resolution. The interference of the four individual beams was measured in the target plane at a stand-off distance of 4.2 m. We report on both a small THz spot diameter along the array axis of < 1 cm for v > 0.3 THz and a high intensity of the central interference peak, in excellent agreement with numerical simulations. These features are very attractive for stand-off imaging and spectroscopy.

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Language(s): eng - English
 Dates: 2011
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Degree: -

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Title: NATO Advanced Research Workshop on Terahertz and Mid Infrared Radiation - Basic Research and Practical Applications
Place of Event: Marmaris, TURKEY
Start-/End Date: 2009-11-03 - 2009-11-06

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Title: TERAHERTZ AND MID INFRARED RADIATION: GENERATION, DETECTION AND APPLICATIONS
  Alternative Title : NATO SCI PEACE SEC B
Source Genre: Proceedings
 Creator(s):
Affiliations:
Publ. Info: PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS : SPRINGER
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 139 - 146 Identifier: ISSN: 1871-465X
ISBN: 978-94-007-0768-9

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Title: NATO Science for Peace and Security Series B-Physics and Biophysics
  Alternative Title : NATO SCI PEACE SEC B
Source Genre: Series
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Publ. Info: -
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISSN: 1871-465X