Emulation and design of terahertz reflection-mode confocal scanning microscopy based on virtual pinhole

Yong-fa Yang; Qi Li

doi:10.1117/12.2071402

3 December 2014 Emulation and design of terahertz reflection-mode confocal scanning microscopy based on virtual pinhole

Yong-fa Yang, Qi Li

Proceedings Volume 9297, International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors; 92970U (2014) https://doi.org/10.1117/12.2071402
Event: International Symposium on Optoelectronic Technology and Application 2014, 2014, Beijing, China

Abstract

In the practical application of terahertz reflection-mode confocal scanning microscopy, the size of detector pinhole is an important factor that determines the performance of spatial resolution characteristic of the microscopic system. However, the use of physical pinhole brings some inconvenience to the experiment and the adjustment error has a great influence on the experiment result. Through reasonably selecting the parameter of matrix detector virtual pinhole (VPH), it can efficiently approximate the physical pinhole. By using this approach, the difficulty of experimental calibration is reduced significantly. In this article, an imaging scheme of terahertz reflection-mode confocal scanning microscopy that is based on the matrix detector VPH is put forward. The influence of detector pinhole size on the axial resolution of confocal scanning microscopy is emulated and analyzed. Then, the parameter of VPH is emulated when the best axial imaging performance is reached.

Citation Download Citation

Yong-fa Yang and Qi Li "Emulation and design of terahertz reflection-mode confocal scanning microscopy based on virtual pinhole", Proc. SPIE 9297, International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors, 92970U (3 December 2014); https://doi.org/10.1117/12.2071402

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