Ambient temperature or moderately cooled semiconductor hot electron bolometer for mm and sub-mm regions

• Autorzy: Dobrovolsky V. N. , Sizov F. E. , Kamenev Y. E. , Smirnov A. B.
• Języki publikacji: EN

Abstrakty

EN

A model of semiconductor hot electron bolometer (SHEB), in which electromagnetic radiation heats only electrons in narrow-gap semiconductor without its lattice slow-response heating, is considered. Free carrier heating changes the generation-recombination processes that are the reason of semiconductor resistance rise. It is estimated, that Hg₀.₈Cd₀.₂Te detector noise equivalent power (NEP) for mm and sub-mm radiation wavelength range can reach NEP ~ 10⁻¹¹ W at Δf = 1 Hz signal gain frequency bandwidth. Measurements performed at electromagnetic wave frequencies v = 36, 39, 55, 75 GHz, and at 0.89 and 1.58 THz too, with non-optimized Hg₀.₈Cd₀.₂Te antenna-coupled bolometer prototype confirmed the basic concept of SHEB. The experimental sensitivity Sv ~ 2 V/W at T = 300 K and the calculated both Johnson-Nyquist and generation-recombination noise values gave estimation of SHEB NEP ~ 3.5 × 10⁻¹⁰ W at the band-width Δf = 1 Hz and v = 36 GHz.

Słowa kluczowe

EN

hot electrons; bolometer; THz; narrow-gap semiconductor

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2008
• Tom: Vol. 16, No. 2
• Strony: 172--178
• Opis fizyczny: Bibliogr. 26 poz., wykr.

Twórcy

autor

Dobrovolsky V. N.

autor

Sizov F. E.

autor

Kamenev Y. E.

autor

Smirnov A. B.

• Lashkariov Institute of Semiconductor Physics, 41 Nauki Ave., 03-028 Kiev, Ukraine

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