Large refractive index enhancement in PbTe/Pb[sub 1-x]Eu[sub x]Te multiquantum-well structures

Shu Yuan; Krenn, H.; Springholz, G.; Bauer, G.; Kriechbaum, M.
February 1993
Applied Physics Letters;2/22/1993, Vol. 62 Issue 8, p885
Academic Journal
Examines the optical interband absorption between confined carrier states in PbTe/Pb[sub 1-x]Eu[sub x]Te multiple quantum wells (MQW). Enhancement of the refractive index at the interband transition energies; Observation of Kramers-Kronig transformation of MQW absorption coefficient; Relevance for the design and fabrication of mid-infrared QW lasers.


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