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THz ATR Prism,THz Prism High-Resistance Silicon Prism,THz ATR Elements
Product Introduction
We can provide THz ATR Prism/High-Resistance Silicon Prism with the following specifications:
——Traditional(right-angle) THz Prism/High-Resistance Silicon Prism.These products are mainly used in optical design
—— Attenuated Total Reflection(ATR) THz ATR Prism/High-Resistance Silicon Prism.These ATR Prism are used for analyzing materials that are difficult to analyze using conventional transmittance methods.
Due to the presence of Fresnel reflection and strong absorption of light in certain special materials, it is almost impossible to analyze such materials using absorption spectroscopy. In such cases, the most suitable method for studying these absorbing materials is attenuated total reflection. This method is based on the following effect: when light enters an interface between an optically dense medium n0 and an absorbing medium (with a smaller refractive index n) at an angle greater than the total reflection critical angle θc = arcsin(n/n0), the reflection efficiency will be attenuated due to the coupling of the evanescent wave with the surface plasmon of the material being measured. This reflection efficiency depends on the incident angle, polarization direction, and the refractive index of the material being measured. The correct selection of prism parameters (especially the prism angle) will yield good ATR spectra. The attenuation total internal reflection method can be used in the THz spectrum to study the absorption efficiency of the material within the 102-104 cm-1(1 um - 100 um: without introducing 2π) spectral range.
THz ATR Prism/High-Resistance Silicon Prism Specification Parameter
| Material | HRFZ-Si | ZEONEX |
| THz Band Refractive Index | 3.416 | 1.531 |
| Dimensional tolerance,mm | ±0.2 | ±0.2 |
| Angle tolerance,acr.min | ±30 | ±30 |
| Surface evenness,scr(spot)/dig(hole) | 80/50 | 80/50 |
| Surface flatness of the polished surface,Ra | 2.5 | 2.5 |
| Surface accuracy,mm | ±0.01 Relative to the ideal plane | ±0.01 Relative to the ideal plane |
THz ATR Prism regular model
| Product Name | Model | Specification |
|
| Size:35mm*13.87mm*25mm(L*H*T) Dimensional tolerance:±0.05mm Apex angle:103.2° |
|
| Size:50.8mm*20.16mm*50.8mm(L*H*T) Dimensional tolerance:±0.05mm Apex angle:103.2° |
Related Product: ATR Prism Mounting Base
| Product Name | Model | Specification |
| ATR-50.8 Mounting | Applicable to ATR-50.8-50.8-103.2 |
Left picture:THz ATR Prism,Right picture:Installed THz ATR Prism