Intersubband terahertz lasers using four-level asymmetric quantum wells

Journal of Applied Physics

Volumn 85, Issue 1, 1999, Pages 23-28

  Kinsler, P ^a   Harrison, P ^a   Kelsall, R W ^a  

^a UNIVERSITY OF LEEDS   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0001873968     PISSN: 00218979     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.369435     Document Type: Article

References (15)

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15. 2 (10.7 THz) resonant prototype is 35.375 THz, about 0.6 meV lower than the LO phonon energy of 36 meV. This means that at the lowest temperatures (e.g., 2 K) most electrons do not quite have sufficient energy to emit an LO-phonon, so there is a distinct dip in the 2 K ph3x scattering rate in Fig. 5 (a). This disappears at higher temperatures as the electrons gain extra (thermal) energy.