Add to BibSonomyAbstract
Semiconductor quantum well (QW) lasers can achieve a tuning range of over 140 nm by pumping the n=2 level, which requires tens of kA/cm2 current densities, although a 90 nm tunable range with only 2 kA/cm2 has been achieved by using multiple different QWs [1]. In contrast to QW lasers, the ground state of quantum dots (QD) rapidly saturates for increasing pump levels. As a result, the excited states of QD lasers can be filled at a fairly low pump current density (~1-2 kA/cm2), which produces a very wide spontaneous emission spectrum [2].
© 2000 IEEE
PDF ArticleMore Like This
D. Bimberg
CMC4 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2000
S. E. Haggett, M. Krakowski, I. Montrosset, and M. A. Cataluna
JTu4A.123 CLEO: Applications and Technology (CLEO:A&T) 2014
G. T. Liu, A. Stintz, H. Li, T. C. Newell, P. Varangis, K. J. Malloy, and L. F. Lester
CWL2 Conference on Lasers and Electro-Optics (CLEO:S&I) 2000