| Citation: |
Liu Fengqi, Guo Yu, Li Lu, Shao Ye, Liu Junqi, Lu Xiuzhen, Wang Zhanguo. Single Mode Operation of Short-Cavity Quantum Cascade Lasers[J]. Journal of Semiconductors, 2006, In Press.
Liu F Q, Guo Y, Li L, Shao Y, Liu J Q, Lu X Z, Wang Z G. Single Mode Operation of Short-Cavity Quantum Cascade Lasers[J]. Chin. J. Semicond., 2006, 27(4): 679.
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Single Mode Operation of Short-Cavity Quantum Cascade Lasers
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Abstract
Single mode operation of strain-compensated In1-xGaxAs/In1-yAlyAs quantum cascade lasers emitting at λ≈5.4 and 8μm is realized by shortening the Fabry-Perot cavity length.Accurate control of growth parameters and strain balance results in a perfect lattice match and thus in excellent material quality.Single mode emission with a side mode suppression ratio greater than 20dB for uncoated lasers is realized.Record low threshold currents of 50 and 80mA and record short cavity lengths of 145 and 170μm are achieved for λ≈5.4μm and λ≈7.84μm devices,respectively,in pulsed mode. -
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