Title :
Sub-picosecond electron scattering time for λ=1.55 μm intersubband transitions in GaN/AlGaN multiple quantum wells
Author :
Gmachl, C. ; Frolov, S.V. ; Ng, H.M. ; Chu, S.N.G. ; Cho, A.Y.
Author_Institution :
Lucent Technol. Bell Labs., Murrey Hill, NJ, USA
fDate :
3/15/2001 12:00:00 AM
Abstract :
GaN-AlGaN multiple quantum wells with a subband spacing of -740 meV (λ=1.67 μm) have the time resolved pump-and-probe technique, with 1.55 μm pump and 1.70 μm probe wavelength. The measurement of an intersubband electron scattering time of 370 fs is reported
Keywords :
III-V semiconductors; aluminium compounds; electron-electron scattering; gallium compounds; high-speed optical techniques; optical communication equipment; optical pumping; semiconductor quantum wells; 1.55 μm intersubband transitions; 1.55 mum; 1.67 mum; 370 fs; GaN-AlGaN; GaN/AlGaN multiple quantum wells; intersubband electron scattering time measurement; optical pumping; probe wavelength; sub-picosecond electron scattering time; subband spacing; time resolved pump-and-probe technique;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20010244
