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Title: Terahertz hyperspectral imaging with dual chip-scale combs

Journal Article · · Optica

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. In this work, we show hyperspectral imaging with chip-scale frequency combs based on terahertz quantum cascade lasers. The dual combs are free-running 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.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; Defense Advanced Research Projects Agency (DARPA)
Grant/Contract Number:
NA-0003525; AC04-94AL85000; W31P4Q-16-1-0001
OSTI ID:
1523699
Alternate ID(s):
OSTI ID: 1529134
Report Number(s):
SAND-2019-0534J
Journal Information:
Optica, Journal Name: Optica Vol. 6 Journal Issue: 6; ISSN 2334-2536
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 50 works
Citation information provided by
Web of Science

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Dual-comb spectroscopy based on quantum-cascade-laser frequency combs journal October 2014
Terahertz time-domain spectroscopy of l-histidine hydrochloride monohydrate journal April 2018
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Mid-infrared dual-comb spectroscopy of volatile organic compounds across long open-air paths journal January 2019
Single-Shot Sub-microsecond Mid-infrared Spectroscopy on Protein Reactions with Quantum Cascade Laser Frequency Combs journal August 2018
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Silicon-chip-based mid-infrared dual-comb spectroscopy journal May 2018
Dual-frequency imaging using an electrically tunable terahertz quantum cascade laser journal January 2009
Recent advances in terahertz technology for biomedical applications journal June 2017
Twenty years of terahertz imaging [Invited] journal January 2018
Massively parallel sensing of trace molecules and their isotopologues with broadband subharmonic mid-infrared frequency combs journal March 2018
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Dual comb operation of λ ∼ 8.2 μ m quantum cascade laser frequency comb with 1 W optical power journal October 2017
Terahertz multiheterodyne spectroscopy using laser frequency combs journal January 2016
Adaptive sampling dual terahertz comb spectroscopy using dual free-running femtosecond lasers journal June 2015
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Cited By (29)

Nondestructive Analysis of Tablet Coating Thicknesses Using Terahertz Pulsed Imaging journal January 2005
Analysis of Coating Structures and Interfaces in Solid Oral Dosage Forms by Three Dimensional Terahertz Pulsed Imaging journal February 2007
Non-invasive investigation of art paintings by terahertz imaging journal March 2010
Optically pumped far infrared lasers journal July 1989
The HITRAN2016 molecular spectroscopic database journal December 2017
Terahertz time-domain spectroscopy of l-histidine hydrochloride monohydrate journal April 2018
Terahertz imaging for non-destructive evaluation of mural paintings journal February 2008
Temperature dependent terahertz pulsed spectroscopy of carbamazepine journal October 2005
Single-Shot Sub-microsecond Mid-infrared Spectroscopy on Protein Reactions with Quantum Cascade Laser Frequency Combs journal August 2018
Lateral Heterogeneous Integration of Quantum Cascade Lasers journal December 2017
Mid-infrared frequency comb based on a quantum cascade laser journal December 2012
Dual-comb spectroscopy based on quantum-cascade-laser frequency combs journal October 2014
Terahertz quantum-cascade lasers journal September 2007
Cutting-edge terahertz technology journal February 2007
Terahertz quantum-cascade-laser source based on intracavity difference-frequency generation journal May 2007
Octave-spanning semiconductor laser journal November 2014
Terahertz laser frequency combs journal May 2014
Silicon-chip-based mid-infrared dual-comb spectroscopy journal May 2018
High-coherence mid-infrared dual-comb spectroscopy spanning 2.6 to 5.2 μm journal March 2018
Massively parallel sensing of trace molecules and their isotopologues with broadband subharmonic mid-infrared frequency combs journal March 2018
Adaptive sampling dual terahertz comb spectroscopy using dual free-running femtosecond lasers journal June 2015
Real-time terahertz imaging over a standoff distance (>25meters) journal October 2006
Mid-infrared multiheterodyne spectroscopy with phase-locked quantum cascade lasers journal April 2017
Dual comb operation of λ ∼ 8.2 μ m quantum cascade laser frequency comb with 1 W optical power journal October 2017
Terahertz Pulsed Imaging of Human Breast Tumors journal May 2006
Recent advances in terahertz technology for biomedical applications journal June 2017
Microelectromechanical control of the state of quantum cascade laser frequency combs journal July 2019
Direct hyperspectral dual-comb imaging journal January 2020
RF Injection of THz QCL Combs at 80 K Emitting over 700 GHz Spectral Bandwidth journal January 2020


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