| 供货周期： | 一周 |
| 品牌： | 泰德克斯 |
| 货号： | 1638859 |
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。
THz monochromatic waveplates can be used only at single wavelength since phase retardation strongly depends on the wavelength. Sometimes it's necessary to have nearly constant retardation at the specified wavelength range. For that case we have developed THz broad-band phase transformers.
Basic methods of broad-band phase transformers calculation are well-known. However, they are not suitable for the case if measuring system has high resolution. So we have modified the methods to take into account interference effect. Broad-band phase transformers consist of several specially oriented crystal quartz plates. The plates are stacked together and fixed into a holder. According to Jones formalism system of several retardation plates is optically equal to system containing only two elements: so called “retarder” and “rotator” (please see Fig.1). Retarder provides required phase shift (usually π or π/2). Rotator turns the polarization plane at angle ω.
Fig.1. Broad-band phase transformer in terms of Jones formalism
and its position relative to polarizer and analyzer.
There are two types of broad-band phase transformers:
1) ω is not 0º and it depends on the wavelength. We call it “achromatic polarization converter” (APC). Example of ω behavior is below. 
Fig.2.a) Angle ω of the APC L/4@60-300 um.
2) ω is about 0º and it is constant within the operating wavelength range. In this case it is usual “achromatic waveplate” (AWP) and its operating principle is the same as of monochromatic waveplate.
Fig.2.b) Angle ω of the AWP L/4@60-95 um.
| 类型 |
THz Achromatic Polarization Converter 太赫兹消色差偏振转换器 |
THz Achromatic Wave Plate 太赫兹消色差波片 |
| 延迟 | L/4 | L/4 |
| 操作波长范围 | 60-300 um ，或用户指定 | 60-95 um ，或用户指定 |
| 椭圆率公差 | +/- 3%，或用户指定 | +/- 10 %，或用户指定 |
| 通光孔径, | 25 mm (标准) ，或<25mm (用户指定) | |
| 支架 | 传统光学光学底座或旋转器 | |
相关产品
工商信息
信息已认证
联系方式
详细地址
联系电话
关注
拨打电话
留言咨询
