Continuous-wave terahertz system with electro-optical terahertz phase control

2008 ◽  
Vol 44 (14) ◽  
pp. 863 ◽  
Author(s):  
T. Göbel ◽  
D. Schoenherr ◽  
C. Sydlo ◽  
M. Feiginov ◽  
P. Meissner ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Phase Control ◽  
Continuous Wave Terahertz System

scholarly journals Electrically Tunable Hydrogen-Bonded Liquid Crystal Phase Control Device

2018 ◽  
Vol 8 (12) ◽  
pp. 2478 ◽  
Author(s):  
Ryota Ito ◽  
Michinori Honma ◽  
Toshiaki Nose
Keyword(s):  
Liquid Crystal ◽  
Phase Shifter ◽  
Continuous Wave ◽  
Phase Control ◽  
Terahertz Wave ◽  
Control Device ◽  
Absorption Properties ◽  
Control Devices ◽  
Wave Control ◽  
Hydrogen Bonded

Terahertz waves have attracted much attention mainly because of their potential in imaging, security checking, nondestructive testing, and information and communication technologies. In the past few years, there has been an extensive effort to investigate terahertz wave control devices. Liquid crystal (LC) devices are strong candidates for high-performance terahertz wave control devices because of their controllability at low drive voltages and their low power consumption. In this study, we fabricated an electrically tunable phase control device by using a hydrogen-bonded LC material. We investigated the performance of the LC phase shifter by using a far infrared continuous wave laser. We also estimated the birefringence and absorption properties of the hydrogen-bonded LC at 2.5 THz by using Jones matrix calculations. The measurements and calculation results indicated that the hydrogen-bonded LC showed no dichroism at 2.5 THz. Based on the absorption properties, we believe that it could be a strong candidate for use in future terahertz devices.

Continuous-wave terahertz system with a 60 dB dynamic range

2005 ◽  
Vol 86 (20) ◽  
pp. 204104 ◽  
Author(s):  
I. S. Gregory ◽  
W. R. Tribe ◽  
C. Baker ◽  
B. E. Cole ◽  
M. J. Evans ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Dynamic Range ◽  
Continuous Wave Terahertz System

scholarly journals Continuous-wave terahertz system based on a dual-mode laser for real-time non-contact measurement of thickness and conductivity

2014 ◽  
Vol 22 (3) ◽  
pp. 2259 ◽  
Author(s):  
Kiwon Moon ◽  
Namje Kim ◽  
Jun-Hwan Shin ◽  
Young-Jong Yoon ◽  
Sang-Pil Han ◽  
...  
Keyword(s):  
Real Time ◽  
Continuous Wave ◽  
Dual Mode ◽  
Mode Laser ◽  
Contact Measurement ◽  
Measurement Of Thickness ◽  
Continuous Wave Terahertz System

scholarly journals Enhancing the stability of a continuous-wave terahertz system by photocurrent normalization

2013 ◽  
Vol 30 (6) ◽  
pp. 1397 ◽  
Author(s):  
Axel Roggenbuck ◽  
Malte Langenbach ◽  
Komalavalli Thirunavukkuarasu ◽  
Holger Schmitz ◽  
Anselm Deninger ◽  
...  
Keyword(s):  
Continuous Wave ◽  
The Stability ◽  
Continuous Wave Terahertz System
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