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- Title
Third order nonlinear optical response of PbS quantum dots.
- Authors
Chowdhury, S.; Hussain, A. M. P.; Ahmed, G. A.; Mohanta, D.; Choudhury, A.
- Abstract
PbS quantum dots of the average size 10 nm are synthesized in the polymer matrix (PVA) following chemical route. Optical absorption spectra reveal a large blue shift from the bulk absorption cutoff wavelength. Instead of using a high power laser, we have measured for the first time the third order nonlinear susceptibility (χ³) of PbS quantum dots using a low power continuous wave laser with the Degenerate Four Wave Mixing (DFWM) technique. The result is encouraging in nonlinear optical application at room temperature.
- Subjects
CORPORATION for Public Broadcasting; QUANTUM dots; NONLINEAR statistical models; HEAT radiation &; absorption; POPULATION viability analysis; ABSORPTION spectra
- Publication
Semiconductor Physics, Quantum Electronics & Optoelectronics, 2006, Vol 9, Issue 2, p45
- ISSN
1560-8034
- Publication type
Article
- DOI
10.15407/spqeo9.02.045