太赫兹偏振片 THz Polarizers

Tydex公司专业订制生产THz光学镜片，可以提供太赫兹专用离轴抛物镜、滤波片、偏振片、窗片、透镜、棱镜、波片、分束片、反射镜和菲涅尔透镜等，同时还提供太赫兹衰减器、太赫兹宽带相位变换器。
 

太赫兹偏振片
   Polyethylene Polarizers

For operation in FIR and THz regions we supply polyethylene polarizers designed to polarize radiation from 7 microns to MM waves. They are the sort of diffraction gratings and operate in transmission. The polarizer grating is made by forming grooves of a triangle profile on the substrate and subsequent deposition of a metal coating (aluminum) on one of the groove facets.

Applications

• THz microscopy

• Molecular orientation studies of crystal and polymer films

• Imaging

• Sensors and detectors

• FTIR spectroscopy

• THz spectroscopy studies

Features

• Used in extremely wide wavelength range from MIR (7 μm) to THz ( 3 mm and even more)

• Substrate is high density polyethylene (HDPE)

• High FIR transmission

• High degree of polarization

• Polarizers are supplied in holders (protective ring with marked grid direction)

Advantages of polyethylene grid polarizers compared to free-standing wire grid polarizers:

• Lower cost

• Possibility to use one polarizer for the wide wavelength range

Tab. 1 Parameters of polyethylene polarizers.

* For square shape polarizer maximal aperture size can be higher, up to 110 x 110 mm .

* For square shape polarizer maximal aperture size can be higher, up to 110 x 110 mm .