High power, low divergent, substrate emitting quantum cascade ring laser in continuous wave operation
Source abstract
Abstract
We demonstrate a surface grating coupled substrate emitting quantum cascade ring laser with high power room temperature continuous wave operation at 4.64 μm. A second order surface metal/semiconductor distributed-feedback grating is used for in-plane feedback and vertical out-coupling. A device with 400 μm radius ring cavity exhibits an output power of 202 mW in room temperature continuous wave operation. Single mode operation with a side mode suppression ratio of 25 dB is obtained along with a good linear tuning with temperature. The far field measurement exhibits a low divergent concentric ring beam pattern with a lobe separation of ∼0.34°, which indicates that the device operates in fundamental mode (n = 1).
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Spectroscopy and Laser Applications · Semiconductor Lasers and Optical Devices · Photonic and Optical Devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Northwestern University Center for Quantum Devices, Department of Electrical Engineering and Computer Science, , Evanston, Illinois 60208, USA
Funding
National Science Foundation · National Aeronautics and Space Administration
References (27)
Show source-provided references
1. Quantum cascade laser10.1126/science.264.5158.553 ↗
2. Quantum cascade laser10.1063/1.1485582 ↗
3. Quantum cascade lasers: From tool to product10.1364/oe.23.008462 ↗
4. Quantum cascade laser spectrometry techniques: A new trend in atmospheric chemistry10.1080/05704928.2012.757232 ↗
5. Laser-based mid-infrared reflectance imaging of biological tissues10.1364/opex.12.000208 ↗
6. Application of quantum cascade lasers to trace gas analysis10.1007/s00340-007-2846-9 ↗
7. Quantum cascade semiconductor infrared and far-infrared lasers: From trace gas sensing to no-linear optics10.1039/b400914m ↗
8. Surface-emitting 10.1 μm quantum-cascade distributed feedback lasers10.1063/1.125450 ↗
9. Surface-emitting distributed feedback quantum-cascade lasers10.1063/1.1313807 ↗
10. Substrate-emitting, distributed feedback quantum cascade lasers10.1063/1.2803851 ↗
11. Surface emitting quantum cascade lasers operating in continuous-wave mode above 70 °C at λ ∼ 4.6 μm10.1063/1.4816722 ↗
12. Analysis of terahertz surface emitting quantum-cascade lasers10.1109/jqe.2005.863138 ↗
13. Surface-emitting distributed feedback terahertz quantum-cascade lasers in metal-metal waveguides10.1364/oe.15.000113 ↗
14. Broad area photonic crystal distributed feedback quantum cascade lasers emitting 34 W at λ ∼ 4.36 μm10.1063/1.3496043 ↗
15. Grating-coupled surface emitting quantum cascade ring lasers10.1063/1.2958910 ↗
16. Ring cavity induced threshold reduction in single-mode surface emitting quantum cascade lasers10.1063/1.3292021 ↗
17. Linearly polarized light from substrate emitting ring cavity quantum cascade lasers10.1063/1.4819034 ↗
18. Grating-based far field modifications of ring quantum cascade lasers10.1364/oe.22.015829 ↗
19. High power, continuous wave, quantum cascade ring laser10.1063/1.3672049 ↗
20. Room-temperature continuous wave operation of distributed feedback quantum cascade lasers with watt-level power output10.1063/1.3525859 ↗
21. Design for high-power, single-lobe, grating-surface-emitting quantum cascade lasers enabled by plasmon-enhanced absorption of antisymmetric mode10.1063/1.4869561 ↗
22. High-power, surface-emitting quantum cascade laser operating in a asymmetric grating mode10.1063/1.4944846 ↗
23. Highly temperature insensitive quantum cascade lasers10.1063/1.3529449 ↗
24. Second-order distributed feedback lasers with mode selection provided by first-order radiation losses10.1109/jqe.1985.1072627 ↗
25. Analysis of grating surface emitting lasers10.1109/3.52121 ↗
26. High operating temperature midwave infrared photodiodes and focal plane arrays based on type-II InAs/GaSb superlattices10.1063/1.3573867 ↗
27. High-performance continuous-wave operation of λ ∼ 4.6 μm quantum-cascade lasers above room temperature10.1109/jqe.2008.924434 ↗