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Opt Express. 2011 Aug 15;19(17):16229-35. doi: 10.1364/OE.19.016229.

Quantum cascade laser master-oscillator power-amplifier with 1.5 W output power at 300 K.

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  • 1Harvard University, School of Engineering and Applied Sciences, 29 Oxford St., Cambridge, MA 02138, USA.


We report quantum cascade laser (QCL) master-oscillator power-amplifiers (MOPAs) at 300 K reaching output power of 1.5 W for tapered devices and 0.9 W for untapered devices. The devices display single-longitudinal-mode emission at λ = 7.26 µm and single-transverse-mode emission at TM(00). The maximum amplification factor is 12 dB for the tapered devices.

© 2011 Optical Society of America

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