NDLI: Dual-beam terahertz quantum cascade laser with >1 W effective output power

Content Provider	IET Digital Library
Author	Tan, Zhiyong Wang, Hongyu Wan, Wenjian Cao, Juncheng
Abstract	A new coupling scheme of a 4.28-THz quantum-cascade laser is constructed by employing two off-axis parabolic reflectors. Two parallel terahertz beams are coupled out from the symmetrical facets of the wire laser. The total effective laser power of the terahertz beams is measured by a thermal power-meter under the modulation state. The highest value of the laser effective output power is about 1.4 W at a driving current of 19.3 A and a duty cycle of 1%. This dual-beam coupling scheme makes full use of the output power of the wire laser and has important applications in terahertz imaging and biological-effect research studies.
Starting Page	1204
Ending Page	1206
Page Count	3
ISSN	00135194
Volume Number	56
e-ISSN	1350911X
Issue Number	Issue 22, Oct (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/56/22
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2020.1376
Journal	Electronics Letters
Publisher Date	2020-09-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	4.28-THz Quantum-cascade Laser Biological-effect Research Studies Current 19.3 A Design of Specific Laser System Driving Current Dual-beam Coupling Scheme Dual-beam Terahertz Quantum Cascade Laser Duty Cycle Frequency 4.28 THz Laser Beam Laser Beam Characteristic And Interactions Laser Beam Modulation Laser Effective Output Power Lasing Action in SemiConductor Microwave Photonics Mode Locking And Tuning Modulation State Off-axis Parabolic Reflectors Optical Element Optical Modulation Parallel Terahertz Beam Pulsing And Switching Quantum Cascade Lasers Semiconductor Laser Symmetrical Facets Terahertz Imaging Thermal Power-meter Total Effective Laser Power Wire Laser
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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