Lasing of whispering-gallery modes in asymmetric waveguide GaInP micro-disks with InP quantum dots

作者：Chu Y^*; Mintairov A M; He Y; Merz J L; Kalyuzhnyy N A; Lantratov V M; Mintairov S A

来源：Physics Letters A, 2009, 373(12-13): 1185-1188.

DOI：10.1016/j.physleta.2009.02.003

Using wafer bonding (WB) and wet oxidation (WO) techniques, GaInP microdisks having an asymmetric waveguide (diameters D = 1-3 mu m) with embedded InP quantum dots (size/density similar to 100 nm/similar to 10(9) cm(-2)) have been fabricated on Si and GaAs Substrates, respectively. The TE(m,l) (m = 28-12, l = 1.2) and TM(m,l) (m = 25-10, l = 1-4) whispering gallery modes with quality factors Q similar to 2-5 x 103 have been identified in photoluminescence spectra of these microdisks (MDs) in the spectral range 720-770 nm. Lasing thresholds of 6 (30) mu W and mode Coupling constants 0.9 (0.7) have been demonstrated for WO (WB) MDs.

• 出版日期2009-3-16