TITLE

An all-cryogenic THz transmission spectrometer

AUTHOR(S)
Burke, P. J.; Eisenstein, J. P.; Pfeiffer, L. N.; West, K. W.
PUB. DATE
January 2002
SOURCE
Review of Scientific Instruments;Jan2002, Vol. 73 Issue 1, p130
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This article describes a THz transmission spectrometer for the spectral range of 2–65 cm-1 (100 GHz to 2 THz) with a spectral resolution of at least 1.8 cm-1 (50 GHz) where the source, sample, and detector are all fully contained in a cryogenic environment. Cyclotron emission from a two-dimensional electron gas (2DEG) heated with an electrical current serves as a magnetic-field tunable source. The spectrometer is demonstrated at 4.2 K by measuring the resonant cyclotron absorption of a second 2DEG. Unique aspects of the spectrometer are that (1) an ultrabroadband detector is used, and (2) the emitter is run quasicontinuously with a chopping frequency of only 1 Hz. Since optical coupling to room temperature components is not necessary, this technique is compatible with ultralow temperature (sub-100 mK) operation. © 2002 American Institute of Physics.
ACCESSION #
5758007

 

Related Articles

  • Compact FT-IR spectrometers address real-world problems. Dixon, G.J. // Laser Focus World;Feb98, Vol. 34 Issue 2, p111 

    Reports on the growing use of Fourier-transform infrared (FT-IR) spectrometers for industrial applications for improved data-processing capability and innovative sampling techniques. Advantages in using infrared; Basic theory of the Fourier-transform spectrometer; Growth expected in the...

  • On temperature dependence of the optically active behavior of an infrared active defect in silicon. Yi Shi; Fengmei Wu // Applied Physics Letters;4/10/1995, Vol. 66 Issue 15, p1945 

    Examines the optically active behaviors of infrared active defect at different temperatures in fast neutron irradiated silicon. Discussion on the relaxation characteristics of photoexcited carriers; Use of Fourier-transform infrared spectrometer to measure infrared absorption; Relationship...

  • Fourier transform infrared spectroscopy approach for measurements of photoluminescence and electroluminescence in mid-infrared. Zhang, Y. G.; Gu, Y.; Wang, K.; Fang, X.; Li, A. Z.; Liu, K. H. // Review of Scientific Instruments;May2012, Vol. 83 Issue 5, p053106 

    An improved Fourier transform infrared spectroscopy approach adapting to photoluminescence and electroluminescence measurements in mid-infrared has been developed, in which diode-pumped solid-state excitation lasers were adopted for photoluminescence excitation. In this approach, three different...

  • DNA Infrared Absorbency Detection using Photopyroelectric Technique and FTIR Spectroscopy. Abu-Teir, Musa; Abu-Taha, Mohammad; Al-Jamal, Atef; Eideh, H. // Journal of Applied Biological Sciences;Sep2008, Vol. 2 Issue 3, p113 

    Absorbencies of different DNA samples were studied using the well known photopyroclectric (PPE) technique and Fourier Transform Infrared (FTIR) spectrometer. In the first method, wideband radiation absorbance from an infrared (IR) poised wideband source (PWBS) by DNA samples were detected and...

  • INFRARED REFLECTANCE OF POROUS GaP. Treideris, M.; Šimkienė, I.; Kašalynas, I.; Selskis, A.; Babonas, J. // International Conference: Radiation Interaction with Material & ;2010, p118 

    The reflectance of porous GaP layers on GaP substrates has been investigated in the frequency range 300-500 cm-1 by Fourier transform infrared (FTIR) reflectance spectroscopy. Porous GaP layers were fabricated by anodic electrochemical etching technique. The structure of porous layers formed by...

  • IR spectra and discharge performance of fluorinated bamboo charcoals. HUANG Ping; LU Jia-Chun; JIANG Sheng-Bo; LIU Zhi-Chao // Applied Mechanics & Materials;2014, Vol. 723, p789 

    Li/graphite fluoride (GFx) cells have been widely noticed during the past decades due to its highest theoretical capacity, high energy density, long shelf life, safety and a wide operating temperature range in primary lithium batteries. Bamboo charcoal is cheap and widely used carbon with high...

  • Reconciling FTIR Spectroscopy with Top-off Operations at the Advanced Light Source. Vernoud, Laetitia; Bechtel, Hans A.; Borondics, Ferenc; Martin, Michael C. // AIP Conference Proceedings;2/3/2010, Vol. 1214 Issue 1, p36 

    Top-off operations is a quasi-continuous injection mode that increases the flux and brightness of a synchrotron source and improves thermal stability of optical components by maintaining a constant current in the storage ring. Although the increased and constant flux is advantageous for FTIR...

  • Analysis of the Fourier transform infrared spectrum of the stannane species 116SnH4 in the region 1270-1600 cm-1. Tabyaoui, A.; Pierre, G.; Bürger, H. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Jan2005, Vol. 32 Issue 1, p51 

    Monoisotopic stannane 116SnH4 has been investigated at room temperature in the 600-850 cm-1 and 1270-1600 cm-1 regions by FTIR spectroscopy with an effective resolution of 2.1 ×10-3 cm-1 and 2.0 ×10-3 cm-1 respectively. The simultaneous analysis of infrared transitions of both the...

  • PROTEIN IDENTIFICATION USING FOURIER TRANFORM INFRARED (FTIR). Sjahfirdi, Luthfiralda; Nasikin, Mohammad // International Journal of Research & Reviews in Applied Sciences;2012, Vol. 10 Issue 3, p418 

    The research was conducted to identify the presence of protein by indicating amide groups and measuring its level in food through specific groups of protein using FTIR (Fourier Transformed Infrared) method. The scanning process was conducted on wavenumber 400-4000 cm-1. The determination of...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics