Product introduction

In addition to synthetic diamonds, high impedance intrinsic silicon (high resistance silicon) materials are suitable for isotropic crystalline materials with very wide ranges from (1.2 µm) to mm (1000 µm or even 8000 µm) waves. Compared to diamonds, it is much cheaper and easier to grow and make. It is also larger and easier to manufacture, and the rapid development of THz technology is based on this advantage. For THz applications, we provide a High Resistivity resistivity tester (HRFZ-Si) of 50 to 54% at 1000 µm (3000 or even 8000 µm for longer wavelengths). High impedance floating zone intrinsic silicon materials, and related optical components.

The permittivity of the synthesized silicon electrolyte is determined by the conductivity (e.g., the free electron-carrier concentration). Figure shows the permittivity of silicon with different purities at 1THz. The permittivity of low doping is close to the true value and approximately equal to the high frequency permittivity. As the doping concentration increases, the true permittivity will become negative and cannot be ignored. The dielectric constant characterizes the transmission loss characteristics of THz wave. The loss coefficient can be calculated using the following formula: tanδ=1/(ω*εv*ε0*R), where ω -- the circular frequency and εv -- the dielectric constant under vacuum (8.85*10-12 F/m). ε0 -- dielectric constant of silicon (11.67), R is the resistance value. For example, at 1THz, the HRFZ-Si loss coefficient of 10 kOhm resistance is 1.54*10-5.

Terahertz time-domain spectrometer test data for 1mm thick intrinsic silicon window plates with high impedance

HRSi windows：

Model	Diameter(mm)	Thickness(mm)
W-HRSi-D25.4-T1	25.4	1
W-HRSi-D25.4-T2	25.4	2
W-HRSi-D50.8-T1	50.8	1
W-HRSi-D50.8-T2	50.8	2
W-HRSi-D101.6-T0.5	101.6	0.5
W-HRSi-D101.6-T1	101.6	1
W-HRSi-D101.6-T2	101.6	2

Other specifications can be customized according to demand

High Resistance silicon products

- High Resistance silicon substrate/window

- High Resistance silicon ball lens

- High Resistance silicon beamsplitter

- High Resistance silicon lens

 

1, high resistance silicon substrate                                  2, high resistance silicon F-P standard

 

3, high resistance silicon THZ hemispheric lens                              4. High resistance silicon THZ bullet lens

  

5, high resistance silicon lens                                               6, high resistance silicon prism