Title :
Excitonic nonlinear optical responses
Author :
Hanamura, Eiichi
Author_Institution :
Dept. of Appl. Phys., Tokyo Univ., Japan
Abstract :
The enhancement of χ(3)(-ω;ω,-ω,ω) and switching rate has been confirmed under resonant pumping of coherent excitons. We propose theoretically the following nonlinear optical responses of the exciton: (1) Superradiance of Frenkel excitons and excitonic n-strings; (2) Frenkel and Wannier excitons show different characteristics of the third-order optical responses χ(3)(-ω;ω,-ω,ω); (3) Generation of phase-conjugated wave shows singular spectrum near mobility edge of the exciton in a bulk crystal
Keywords :
excited states; excitons; optical phase conjugation; optical pumping; semiconductor quantum dots; semiconductor quantum wells; semiconductor quantum wires; superradiance; Frenkel excitons; Wannier excitons; bulk crystal; coherent excitons; excitonic n-strings; excitonic nonlinear optical responses; mobility edge; nonlinear optical responses; phase-conjugated wave; resonant pumping; superradiance; switching rate; third-order optical responses; Absorption; Crystals; Excitons; Frequency conversion; Luminescence; Nonlinear optics; Optical pumping; Resonance; Solid state circuits; Spontaneous emission;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1993. LEOS '93 Conference Proceedings. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-1263-5
DOI :
10.1109/LEOS.1993.379107
