Fluorescent Radiation Thermometry at Cryogenic Temperatures Based on Detailed Balance Relation
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概要
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We demonstrated a new method of radiation thermometry at cryogenic temperatures on the basis of the detailed balance relation between absorption and photoluminescence in a small n-type-modulation-doped GaAs quantum-well sample. This method has unique advantages such as being non invasive. It also does not need to be calibrated and possibly offers high spatial resolution. We measured temperatures of a sample mounted on a sapphire substrate attached to a copper cold finger at 7--101 K in a cryostat. The temperatures measured with this method were consistent with those obtained from a separate calibrated traditional temperature sensor. The estimated uncertainties were \pm 2 K below 50 K and \pm 8 K below 100 K.
- 2013-05-25
著者
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Yoshita Masahiro
Institute For Solid State Physics The University Of Tokyo
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Akiyama Hidefumi
Institute For Solid State Physics University Of Tokyo
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Pfeiffer Loren
Department of Electrical Engineering, Princeton University, Princeton, NJ 08544, U.S.A.
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Ihara Toshiyuki
Institute for Solid State Physics, University of Tokyo, and CREST, JST, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
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MOCHIZUKI Toshimitsu
Institute for Solid State Physics, The University of Tokyo
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Maruyama Shun
Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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West Ken
Department of Electrical Engineering, Princeton University, Princeton, NJ 08540, U.S.A.
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Yoshita Masahiro
Institute for Solid State Physics, University of Tokyo, and JST-CREST, Kashiwa, Chiba 277-8581, Japan
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Pfeiffer Loren
Department of Electrical Engineering, Princeton University, Princeton, NJ 08540, U.S.A.
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