Photolithographic Polarisers

Our photolithographic polarisers are designed for the higher frequency range (i.e. above 3 THz) where free-standing polarisers become less efficient. They are commonly used in polarising FT spectrometers for the far infrared region and in polarisation sensitive receivers such as the higher frequency bands of ALMA. They have also been qualified for use in long-life space-borne projects such as Cassini.

A pattern of thin parallel lines is created in metal on the surface of an ultra-thin polymeric substrate. As a consequence of their structure and of the method used to construct them, these polarisers must be circular and are usually mounted in stainless steel support frames.

The support substrate is usually 0.9 um or 1.5 um thick Mylar, and the metal 'wires' are copper or gold.

The polarisers are mounted in their support frames by means of a press, and each frame design requires pressing tools. We therefore offer a range of standard polariser support frame sizes. Special sizes, up to the maxima indicated in the table below, are still available but costs will include the manufacture of special press tools.

We have a range of patterns available with dimensions as follows:

Polarisers

Polarisers are optical components which convert unpolarised radiation into orthogonal linearly polarised components.

We offer two distinct devices for operation throughout the millimetre and far infrared spectral region and at both ambient and cryogenic temperatures.

Wire grid polarisers are suitable at frequencies below 3 THz; wire is wound across a supporting metal frame and then glued into place. Wire diameters as low as 5 um are available, and we recommend this relatively low-cost option for frequencies up to 3 THz. Diameters up to 500 mm are possible. More information can be found below.

At higher frequencies wire grid polarisers become less efficient. For these frequencies we offer lithographic polarisers in which thin metal patterns are deposited onto ultra-thin polymeric substrates. Pattern repeat distances of 2um and 10um are standards and these are available in diameters up to approximately 200 mm. See below for further details.

Wire grid polarisers are offered using wire diameters from 5 um upwards. Our computer-controlled grid-winding machine weighs more than one tonne and is capable of winding grids up to 500 mm in diameter. The photograph shows one of the larger wire grid polarisers we have made to date – the winding of a pair like this used more than 6km of wire.

Wire is wound across a supporting metal frame and then glued in place (often sandwiched between two frame halves).

Business information

工商信息

信息已认证

企业名称: 筱晓（上海）光子技术有限公司
企业类型: 有限责任公司(自然人投资或控股)
信用代码: 913101163987029680
成立日期: 2014年06月26日
注册资本: 人民币1000.0000万元整
经营范围: 从事“光电、通信、机械设备、电子、计算机、计算机网络”科技领域内的技术开发、技术咨询、技术服务,机电设备及配件,光电设备及配件,通信设备及相关产品,仪器仪表,电子元器件,计算机、软件及辅助设备,电线电缆,五金交电,建筑材料,日用百货销售,从事货物进出口及技术进出口业务,机电设备安装、维修,计算机软件开发。[依法须经批准的项目,经相关部门批准后方可开展经营活动]

供货周期：	现货
品牌：	完美光子

THZ线栅起偏器_太赫兹_ Thomas Keating

Photolithographic Polarisers

Polarisers