Premium
Quantum Dot Lasers Using High‐ Q Microdisk Cavities
Author(s) -
Michler P.,
Kiraz A.,
Becher C.,
Zhang Lidong,
Hu E.,
Imamoglu A.,
Schoenfeld W.V.,
Petroff P.M.
Publication year - 2001
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(200104)224:3<797::aid-pssb797>3.0.co;2-i
Subject(s) - lasing threshold , quantum dot , laser , whispering gallery wave , optoelectronics , materials science , quantum dot laser , wavelength , optics , semiconductor laser theory , continuous wave , q factor , physics , resonator , semiconductor
We report experimental observation of optically‐pumped continuous‐wave lasing from self‐assembled quantum dots (QDs) embedded in high‐quality factor ( Q ) microdisk laser structures. For large diameter (4.5 μm) microdisks containing InAs QDs, the emission spectra show simultaneous lasing on one to five well separated modes ( Q = 10000–17000) in the wavelength range between 920 and 990 nm. For small diameter (2 μm) microdisks containing (In,Ga)As QDs, lasing occurs even when the estimated average number of QDs inside the cavity‐mode volume is unity.