Abstract
Edge-emitting GaAs-Al0.45Ga0.55As quantum cascade microlasers with photonic crystal reflectors have been fabricated. The resonator length of 100 mu m leads to a large free-pectral range of the longitudinal resonator modes. Owing to this large free-spectral range, single-mode operation with a sidemode suppression ratio of 20 dB at 80 K has been achieved. table single-mode emission is obtained and the emission can be tuned with a rate of -0.046 cm(-1)/K. The maximum operation temperature of this microlaser is 220 K, whereas a 275-mu m-long device can be operated up to 280 K.
Original language | English |
---|---|
Pages (from-to) | 1937-1939 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 19 |
Issue number | 21-24 |
DOIs | |
Publication status | Published - 2007 |
Keywords
- microlasers
- mid-infrared
- photonic crystal (PhC)
- quantum cascade lasers (QCLs)
- single-mode
- LASERS
- SEMICONDUCTOR
- PERFORMANCE
- FABRICATION
- EMISSION
- DESIGN