Title :
The effects of inhomogeneous broadening on intersubband difference frequency generation
Author :
Rabinovich, W.S. ; Beadie, G.
Author_Institution :
Sci. Div., Naval Res. Lab., Washington, DC, USA
Abstract :
Summary form only given. Intersubband systems exhibit nonlinearities that can be hundreds of times larger than that of conventional materials. This has made them attractive candidates for nonlinear frequency conversion and other applications. Early work on intersubband nonlinearities focused on GaAs/AlGaAs quantum wells. Because of the small conduction band offset of this material system, it is only suitable to resonantly enhance nonlinear interactions of 5 /spl mu/m wavelength or longer. Thus most studies of the nonlinear optical properties of intersubband transitions (ISBT) have used CO/sub 2/ lasers.
Keywords :
III-V semiconductors; aluminium compounds; conduction bands; gallium arsenide; optical frequency conversion; resonant states; semiconductor quantum wells; 5 micron; CO/sub 2/; CO/sub 2/ lasers; GaAs-AlGaAs; GaAs/AlGaAs quantum wells; inhomogeneous broadening; intersubband difference frequency generation; intersubband nonlinearities; intersubband systems; intersubband transitions; nonlinear frequency conversion; nonlinear interactions; nonlinear optical properties; nonlinearities; resonantly enhance; small conduction band offset; Fluctuations; Frequency conversion; High speed optical techniques; Nonlinear optics; Optical materials; Optical pumping; Optical saturation; Optical sensors; Pulse measurements; Pulse modulation;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2001. QELS '01. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-663-X
DOI :
10.1109/QELS.2001.961957
