Highly efficient stimulated Raman scattering of picosecond pulses in KTiOPO4
High-efficiency picosecond stimulated Raman scattering (SRS) by phonon-polaritons has been observed in KTiOPO4 in a single pass through a 10 mm long crystal. For pulses longer than 10 ...
High-efficiency picosecond stimulated Raman scattering (SRS) by phonon-polaritons has been observed in KTiOPO4 in a single pass through a 10 mm long crystal. For pulses longer than 10 ...
Ultrahigh-Q photonic crystal nanocavities realized by the local width modulation of a line defect
We propose an ultrahigh quality factor (Q) photonic crystal slab nanocavity created by the local width modulation of a line defect. We show numerically that this nanocavity has an intrinsic Q value of...
We propose an ultrahigh quality factor (Q) photonic crystal slab nanocavity created by the local width modulation of a line defect. We show numerically that this nanocavity has an intrinsic Q value of...
Room-temperature continuous-wave operation of quantum-cascade lasers at 
~4 µm
Appl. Phys. Lett. 88, 041111 (2006); doi:10.1063/1.2167394
Published 24 January 2006
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High-power cw ~4 µm quantum-cascade lasers (QCLs) are demonstrated. The effect of different cavity length and laser die bonding is also investigated. For a high-reflectivity-coated 11-µm-wide and 4-mm-long epilayer-down bonded QCL, cw output powers as high as 1.6 W at 80 K and 160 mW at 298 K are obtained, and the cw operation is achieved up to 313 K with 12 mW. The laser exhibits a threshold current density of 1.96 kA/cm2, a slope efficiency of 737 mW/A, and a maximum wall-plug efficiency of 0.9% under cw mode at 298 K. In pulsed mode, a maximum average power of 552 mW at 298 K is achieved at 45% duty cycle and a characteristic temperature is 176 K from 80 to 393 K.
©2006 American Institute of Physics
~4 µm quantum-cascade lasers (QCLs) are demonstrated. The effect of different cavity length and laser die bonding is also investigated. For a high-reflectivity-coated 11-µm-wide and 4-mm-long epilayer-down bonded QCL, cw output powers as high as 1.6 W at 80 K and 160 mW at 298 K are obtained, and the cw operation is achieved up to 313 K with 12 mW. The laser exhibits a threshold current density of 1.96 kA/cm2, a slope efficiency of 737 mW/A, and a maximum wall-plug efficiency of 0.9% under cw mode at 298 K. In pulsed mode, a maximum average power of 552 mW at 298 K is achieved at 45% duty cycle and a characteristic temperature is 176 K from 80 to 393 K.
©2006 American Institute of Physics
| History: | Received 7 October 2005; accepted 28 November 2005; published 24 January 2006 |
| Permalink: |
http://link.aip.org/link/?APPLAB/88/041111/1 |
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