Large-scale array of resonant-tunneling-diode terahertz oscillators for high output power at 1 THz

2019 ◽  
Vol 125 (15) ◽  
pp. 151601 ◽  
Author(s):  
Kouhei Kasagi ◽  
Safumi Suzuki ◽  
Masahiro Asada
Keyword(s):  
Output Power ◽  
Resonant Tunneling ◽  
Large Scale ◽  
Resonant Tunneling Diode ◽  
High Output Power ◽  
Tunneling Diode ◽  
High Output

scholarly journals Terahertz Emitter Using Resonant-Tunneling Diode and Applications

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1384
Author(s):  
Masahiro Asada ◽  
Safumi Suzuki
Keyword(s):  
Output Power ◽  
High Frequency ◽  
Resonant Tunneling ◽  
Large Scale ◽  
Frequency Tuning ◽  
Resonant Tunneling Diode ◽  
High Output Power ◽  
Tunneling Diode ◽  
Spectral Narrowing ◽  
High Output

A compact source is important for various applications utilizing terahertz (THz) waves. In this paper, the recent progress in resonant-tunneling diode (RTD) THz oscillators, which are compact semiconductor THz sources, is reviewed, including principles and characteristics of oscillation, studies addressing high-frequency and high output power, a structure which can easily be fabricated, frequency tuning, spectral narrowing, different polarizations, and select applications. At present, fundamental oscillation up to 1.98 THz and output power of 0.7 mW at 1 THz by a large-scale array have been reported. For high-frequency and high output power, structures integrated with cylindrical and rectangular cavities have been proposed. Using oscillators integrated with varactor diodes and their arrays, wide electrical tuning of 400–900 GHz has been demonstrated. For spectral narrowing, a line width as narrow as 1 Hz has been obtained, through use of a phase-locked loop system with a frequency-tunable oscillator. Basic research for various applications—including imaging, spectroscopy, high-capacity wireless communication, and radar systems—of RTD oscillators has been carried out. Some recent results relating to these applications are discussed.

scholarly journals Resonant Tunneling Diode Terahertz Sources With up to 1 mW Output Power in the J-Band

2020 ◽  
Vol 10 (2) ◽  
pp. 150-157 ◽  
Author(s):  
Abdullah Al-Khalidi ◽  
Khalid Hamed Alharbi ◽  
Jue Wang ◽  
Razvan Morariu ◽  
Liquan Wang ◽  
...  
Keyword(s):  
Output Power ◽  
Resonant Tunneling ◽  
Resonant Tunneling Diode ◽  
Terahertz Sources ◽  
Tunneling Diode

scholarly journals Terahertz Oscillation of Resonant Tunneling Diode and Modulation of Its Output Power with Laser Irradiation

2012 ◽  
Vol 40 (7) ◽  
pp. 517
Author(s):  
Safumi SUZUKI ◽  
Shinji KABURAKI ◽  
Hidetoshi KANAYA ◽  
Masahiro ASADA
Keyword(s):  
Laser Irradiation ◽  
Output Power ◽  
Resonant Tunneling ◽  
Resonant Tunneling Diode ◽  
Tunneling Diode

High Output Power (∼400 µW) Oscillators at around 550 GHz Using Resonant Tunneling Diodes with Graded Emitter and Thin Barriers

2011 ◽  
Vol 4 (6) ◽  
pp. 064101 ◽  
Author(s):  
Masato Shiraishi ◽  
Hirotaka Shibayama ◽  
Kaname Ishigaki ◽  
Safumi Suzuki ◽  
Masahiro Asada ◽  
...  
Keyword(s):  
Output Power ◽  
Resonant Tunneling ◽  
Resonant Tunneling Diodes ◽  
High Output Power ◽  
Tunneling Diodes ◽  
High Output
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