论文信息 - Lasing emission of InGaAs quantum dot microdisk diodes

Lasing emission of InGaAs quantum dot microdisk diodes

An improved three-arm airbridge contacted microdisk diode structure is presented. Continuous-wave lasing from InGaAs quantum dot (QD) in a /spl sim/4-/spl mu/m-diameter microdisks is reported with the threshold current /spl sim/40 /spl mu/A at T=5 K. With the increase of injection current, the QD's emission blueshifts due to the band-filling effect, while the laser mode peak redshifts by thermal effect. When the QD's gain spectra shift out of alignment with the lasing mode, the next available whispering gallery mode starts lasing from QD wetting layer. The thermal heating effect is discussed by investigating the modes redshift with respect to injection current.

E. Hu | Lidong Zhang | E. Hu

[1] Hui Cao,et al. Optically pumped InAs quantum dot microdisk lasers , 2000 .

[2] Peter Michler,et al. Laser emission from quantum dots in microdisk structures , 2000 .

[3] Diana L. Huffaker,et al. Electroluminescence efficiency of 1.3 μm wavelength InGaAs/GaAs quantum dots , 1998 .

[4] Pierre Petroff,et al. Electronic states tuning of InAs self-assembled quantum dots , 1998 .

[5] E. Hu,et al. Lasing from InGaAs quantum dots in an injection microdisk , 2003 .

[6] Peter Michler,et al. Cavity-quantum electrodynamics using a single InAs quantum dot in a microdisk structure , 2001 .

[7] R. Ushigome,et al. Large spontaneous emission factor of 0.1 in a microdisk injection laser , 2001, IEEE Photonics Technology Letters.

[8] H. Wenzel,et al. Modeling thermal effects on the light vs. current characteristic of gain-guided vertical-cavity surface-emitting lasers , 1994, IEEE Photonics Technology Letters.

[9] D. Bimberg,et al. Spectral mode dynamics of short cavity quantum-dot lasers at 1.13 m , 2002 .