2.4 W room temperature continuous wave operation of distributed feedback quantum cascade lasers

We demonstrate high power continuous-wave room-temperature operation surface-grating distributed feedback quantum cascade lasers at 4.8 μm. High power single mode operation benefits from a combination of high-reflection and antireflection coatings. Maximum single-facet continuous-wave output power of 2.4 W and peak wall plug efficiency of 10% from one facet is obtained at 298 K. Single mode operation with a side mode suppression ratio of 30 dB and single-lobed far field without beam steering is observed.

[1]  M. Razeghi,et al.  High-Performance InP-Based Mid-IR Quantum Cascade Lasers , 2009, IEEE Journal of Selected Topics in Quantum Electronics.

[2]  Manijeh Razeghi,et al.  Room-temperature continuous wave operation of distributed feedback quantum cascade lasers with watt-level power output , 2010 .

[3]  Mathieu Carras,et al.  Photonic modes of metallodielectric periodic waveguides in the midinfrared spectral range , 2006 .

[4]  Xavier Marcadet,et al.  Top grating index-coupled distributed feedback quantum cascade lasers , 2008 .

[5]  G Fibich,et al.  Critical power for self-focusing in bulk media and in hollow waveguides. , 2000, Optics letters.

[6]  P. L. Kelley,et al.  Self-focusing of optical beams , 1965, International Quantum Electronics Conference, 2005..

[7]  Manijeh Razeghi,et al.  High-power, room-temperature, and continuous-wave operation of distributed-feedback quantum-cascade lasers at λ∼4.8μm , 2005 .

[8]  Influence of the growth temperature on the performances of strain-balanced quantum cascade lasers , 2011 .

[9]  M. Razeghi,et al.  High-Performance Continuous-Wave Operation of $\lambda \sim {\hbox {4.6}}~\mu{\hbox {m}}$ Quantum-Cascade Lasers Above Room Temperature , 2008, IEEE Journal of Quantum Electronics.

[10]  Wei Zhang,et al.  Electrically pumped photonic crystal distributed feedback quantum cascade lasers , 2007 .

[11]  Jacob B. Khurgin,et al.  Highly power-efficient quantum cascade lasers , 2010 .

[12]  Qi Jie Wang,et al.  3 W Continuous-Wave Room Temperature Single-Facet Emission From Quantum Cascade Lasers Based On Nonresonant Extraction Design Approach , 2009 .

[13]  Manijeh Razeghi,et al.  Quantum cascade lasers that emit more light than heat , 2010 .