Femtosecond intersubband relaxation and population inversion in stepped quantum well

Sung, C. Y.; Norris, Theodore B.; Afzali‐kushaa, A.; Haddad, George I.

Femtosecond intersubband relaxation and population inversion in stepped quantum well

dc.contributor.author	Sung, C. Y.	en_US
dc.contributor.author	Norris, Theodore B.	en_US
dc.contributor.author	Afzali‐kushaa, A.	en_US
dc.contributor.author	Haddad, George I.	en_US
dc.date.accessioned	2010-05-06T22:04:58Z
dc.date.available	2010-05-06T22:04:58Z
dc.date.issued	1996-01-22	en_US
dc.identifier.citation	Sung, C. Y.; Norris, T. B.; Afzali‐Kushaa, A.; Haddad, G. I. (1996). "Femtosecond intersubband relaxation and population inversion in stepped quantum well." Applied Physics Letters 68(4): 435-437. <http://hdl.handle.net/2027.42/70388>	en_US
dc.identifier.uri	https://hdl.handle.net/2027.42/70388
dc.description.abstract	We have investigated intersubband relaxation rates in a stepped quantum well at room temperature using differential transmission spectroscopy with subpicosecond time resolution. The dynamics of the subband populations are derived from the experimentally observed reduction of oscillator strength of the corresponding exciton transitions. In the stepped quantum well the relaxation through longitudinal optical‐phonon emission from n=3 to 1 (25 ps) is slower than that from 2 to 1 (220 fs), due to the reduced wave function overlap and larger wave vector required for intersubband scattering. When the n=3 state is pumped, a population inversion between n3 and n2 (which are separated by 7 THz) is observed. © 1996 American Institute of Physics.	en_US
dc.format.extent	3102 bytes
dc.format.extent	80505 bytes
dc.format.mimetype	text/plain
dc.format.mimetype	application/pdf
dc.publisher	The American Institute of Physics	en_US
dc.rights	© The American Institute of Physics	en_US
dc.title	Femtosecond intersubband relaxation and population inversion in stepped quantum well	en_US
dc.type	Article	en_US
dc.subject.hlbsecondlevel	Physics	en_US
dc.subject.hlbtoplevel	Science	en_US
dc.description.peerreviewed	Peer Reviewed	en_US
dc.contributor.affiliationum	Center for Ultrafast Optical Science, 1006 2200 Bonisteel Blvd./IST, Ann Arbor, Michigan 48109	en_US
dc.contributor.affiliationum	EECS Department, The University of Michigan, Ann Arbor, Michigan 48109	en_US
dc.description.bitstreamurl	http://deepblue.lib.umich.edu/bitstream/2027.42/70388/2/APPLAB-68-4-435-1.pdf
dc.identifier.doi	10.1063/1.116404	en_US
dc.identifier.source	Applied Physics Letters	en_US
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dc.owningcollname	Physics, Department of

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