Abstract-Thermal crosstalk simulation and measurement of linear terahertz detector arrays

• Weizhi Li^a, , , 
• Zehua Huang^a, 
• Jun Wang^a, 
• Mingyu Li^b, 
• Jun Gou^a, 
• Yadong Jiang^a

• ^a State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China
• ^b State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, People’s Republic of China

Received 25 May 2015, Available online 11 September 2015

http://www.sciencedirect.com/science/article/pii/S1350449515002273

Thermal simulation of differently structured linear terahertz detector arrays (TDAs) based on lithium tantalate was performed by finite element analysis (FEA). Simulation results revealed that a relatively simple TDA structure can have good thermal insulation, i.e., low thermal crosstalk effect (TCE), between adjacent pixels, which was thus selected for the real fabrication of TDA sample. Current responsivity (R_i) of the sample for a 2.52THz source was measured to be 6.66×10^-6A/W and non-uniformity (NU) of R_i was 4.1%, showing good performance of the sample. TCE test result demonstrated that small TCE existed in the sample, which was in good agreement with the simulation results.