Step well quantum cascade laser emitting at 3 THz

作者：Scalari Giacomo^*; Amanti Maria I; Fischer Milan; Terazzi Romain; Walther Christoph; Beck Mattias; Faist Jerome

来源：Applied Physics Letters, 2009, 94(4): 041114.

DOI：10.1063/1.3068496

• aluminium compounds
• current density
• gallium arsenide
• III-V semiconductors
• quantum cascade lasers
• semiconductor quantum wells

A quantum cascade laser based on a three well active module and emitting at 3 THz is demonstrated. The optical transition is vertical in real space and localized in an Al(0.03)Ga(0.97)As quantum well. Maximum operating temperature of 123 K in pulsed mode is reported, with threshold current densities as low as 110 A/cm(2) at 10 K and 175 A/cm(2) at 100 K. High slope efficiency values testify the good internal quantum efficiency of the structure.

• 出版日期2009-1-26