TY - JOUR
T1 - Terahertz hyperspectral imaging with dual chip-scale combs
AU - Sterczewski, Lukasz A.
AU - Westberg, Jonas
AU - Yang, Yang
AU - Burghoff, David
AU - Reno, John
AU - Hu, Qing
AU - Wysocki, Gerard
N1 - Funding Information:
Funding. Defense Advanced Research Projects Agency (DARPA) (W31P4Q-16-1-0001); Kosciuszko Foundation (KF) (Kosciuszko Foundation Grant); Fundacja na rzecz Nauki Polskiej (FNP) (START 085.2018); Thorlabs Inc.; Aviation and Missile Research, Development, and Engineering Center (AMRDEC); U.S. Department of Energy (DOE); Sandia National Laboratories National Technology and Engineering Solutions of Sandia; DOE National Nuclear Security Administration (NNSA) (DE-NA-0003525).
Funding Information:
Defense Advanced Research Projects Agency (DARPA) (W31P4Q-16-1-0001); Kosciuszko Foundation (KF) (Kosciuszko Foundation Grant); Fundacja na rzecz Nauki Polskiej (FNP) (START 085.2018); Thorlabs Inc.; Aviation and Missile Research, Development, and Engineering Center (AMRDEC); U.S. Department of Energy (DOE); Sandia National Laboratories National Technology and Engineering Solutions of Sandia; DOE National Nuclear Security Administration (NNSA) (DE-NA-0003525). The authors would like to acknowledge Willian H. Dix for his help with the laser submounts. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the DARPA, the U.S. Army, or the U.S. Government. The work in this research article was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy?s National Nuclear Security Administration.
Funding Information:
Acknowledgment. The authors would like to acknowledge Willian H. Dix for his help with the laser submounts. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the DARPA, the U.S. Army, or the U.S. Government. The work in this research article was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy’s National Nuclear Security Administration.
Publisher Copyright:
© 2019 Optical Society of America.
PY - 2019/6/20
Y1 - 2019/6/20
N2 - Hyperspectral imaging is a spectroscopic imaging technique that allows for the creation of images with pixels containing information from multiple spectral bands. At terahertz wavelengths, it has emerged as a prominent tool for a number of applications, ranging from nonionizing cancer diagnosis and pharmaceutical characterization to nondestructive artifact testing. Contemporary terahertz imaging systems typically rely on nonlinear optical downconversion of a fiber-based near-infrared femtosecond laser, requiring complex optical systems. Here, we demonstrate hyperspectral imaging with chip-scale frequency combs based on terahertz quantum cascade lasers. The dual combs are freerunning and emit coherent terahertz radiation that covers a bandwidth of 220 GHz at 3.4 THz with ~10 µW per line. The combination of the fast acquisition rate of dual-comb spectroscopy with the monolithic design, scalability, and chip-scale size of the combs is highly appealing for future imaging applications in biomedicine and the pharmaceutical industry.
AB - Hyperspectral imaging is a spectroscopic imaging technique that allows for the creation of images with pixels containing information from multiple spectral bands. At terahertz wavelengths, it has emerged as a prominent tool for a number of applications, ranging from nonionizing cancer diagnosis and pharmaceutical characterization to nondestructive artifact testing. Contemporary terahertz imaging systems typically rely on nonlinear optical downconversion of a fiber-based near-infrared femtosecond laser, requiring complex optical systems. Here, we demonstrate hyperspectral imaging with chip-scale frequency combs based on terahertz quantum cascade lasers. The dual combs are freerunning and emit coherent terahertz radiation that covers a bandwidth of 220 GHz at 3.4 THz with ~10 µW per line. The combination of the fast acquisition rate of dual-comb spectroscopy with the monolithic design, scalability, and chip-scale size of the combs is highly appealing for future imaging applications in biomedicine and the pharmaceutical industry.
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U2 - 10.1364/OPTICA.6.000766
DO - 10.1364/OPTICA.6.000766
M3 - Article
AN - SCOPUS:85068777920
SN - 2334-2536
VL - 6
SP - 766
EP - 771
JO - Optica
JF - Optica
IS - 6
ER -