Lateral Heterogeneous Integration of Quantum Cascade Lasers
Abstract
Broadband terahertz radiation potentially has extensive applications, ranging from personal health care to industrial quality control and security screening. While traditional methods for broadband terahertz generation rely on bulky and expensive mode-locked lasers, frequency combs based on quantum cascade lasers (QCLs) can provide an alternative compact, high power, wideband terahertz source. QCL frequency combs incorporating a heterogeneous gain medium design can obtain even greater spectral range by having multiple lasing transitions at different frequencies. However, despite their greater spectral coverage, the comparatively low gain from such gain media lowers the maximum operating temperature and power. Lateral heterogeneous integration offers the ability to cover an extensive spectral range while maintaining the competitive performance offered from each homogeneous gain media. In this paper, we present the first lateral heterogeneous design for broadband terahertz generation: by combining two different homogeneous gain media, we have achieved a two-color frequency comb spaced by 1.5 THz.
- Authors:
-
[1];
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Electrical Engineering and Computer Science. Research Lab. of Electronics
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnology
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF); Defense Advanced Research Projects Agency (DARPA) (United States); Army Aviation and Missile Research, Development and Engineering Center (AMRDEC) (United States)
- OSTI Identifier:
- 1467027
- Report Number(s):
- SAND-2018-3250J
Journal ID: ISSN 2330-4022; 661842
- Grant/Contract Number:
- NA0003525; W31P4Q-16-1-0001
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Photonics
- Additional Journal Information:
- Journal Volume: 5; Journal Issue: 7; Journal ID: ISSN 2330-4022
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; broadband sources; frequency combs; monolithic integration; semiconductor lasers; terahertz
Citation Formats
Yang, Yang, Paulsen, Andrew, Burghoff, David, Reno, John L., and Hu, Qing. Lateral Heterogeneous Integration of Quantum Cascade Lasers. United States: N. p., 2018.
Web. doi:10.1021/acsphotonics.8b00507.
Yang, Yang, Paulsen, Andrew, Burghoff, David, Reno, John L., & Hu, Qing. Lateral Heterogeneous Integration of Quantum Cascade Lasers. United States. https://doi.org/10.1021/acsphotonics.8b00507
Yang, Yang, Paulsen, Andrew, Burghoff, David, Reno, John L., and Hu, Qing. Thu .
"Lateral Heterogeneous Integration of Quantum Cascade Lasers". United States. https://doi.org/10.1021/acsphotonics.8b00507. https://www.osti.gov/servlets/purl/1467027.
@article{osti_1467027,
title = {Lateral Heterogeneous Integration of Quantum Cascade Lasers},
author = {Yang, Yang and Paulsen, Andrew and Burghoff, David and Reno, John L. and Hu, Qing},
abstractNote = {Broadband terahertz radiation potentially has extensive applications, ranging from personal health care to industrial quality control and security screening. While traditional methods for broadband terahertz generation rely on bulky and expensive mode-locked lasers, frequency combs based on quantum cascade lasers (QCLs) can provide an alternative compact, high power, wideband terahertz source. QCL frequency combs incorporating a heterogeneous gain medium design can obtain even greater spectral range by having multiple lasing transitions at different frequencies. However, despite their greater spectral coverage, the comparatively low gain from such gain media lowers the maximum operating temperature and power. Lateral heterogeneous integration offers the ability to cover an extensive spectral range while maintaining the competitive performance offered from each homogeneous gain media. In this paper, we present the first lateral heterogeneous design for broadband terahertz generation: by combining two different homogeneous gain media, we have achieved a two-color frequency comb spaced by 1.5 THz.},
doi = {10.1021/acsphotonics.8b00507},
journal = {ACS Photonics},
number = 7,
volume = 5,
place = {United States},
year = {Thu Jun 07 00:00:00 EDT 2018},
month = {Thu Jun 07 00:00:00 EDT 2018}
}
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Cited by: 3 works
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Figures / Tables:
Figure 1: (a) Schematic of the combiner design. The outer radius, overlap between input ports, and coupling length are optimized to maximize the transmission and minimize reflection and crosstalk. (b) SEM images of the fabricated device. Psuedocolor is in use to distinguish original gain media. The inset shows one ofmore »
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Works referencing / citing this record:
Terahertz hyperspectral imaging with dual chip-scale combs
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Figures / Tables found in this record:
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