The Model 75160NF Optical Chopper is used to introduce a periodic interruption of a light path in an optical experiment resulting in an amplitude modulation, which is useful for many small optical signal detection schemes. The modulation frequency can be controlled from 4 Hz to 2.0 kHz. Full control is available through the Optical Chopper Controller’s front panel. In addition, the Chopper Controller can be programmed over a USB communication interface to set and measure the modulation frequency, adjust the interruption phase, and perform all other operations available through the front panel The 75160NF includes: Chopper Controller, Oriel Chopper Head and interconnection cable, Chopper Wheel Set (2, 5, 12 and 30 apertures), USB Flash Drive containing the user manual, USB driver, GUI software application and documented programming example, Power supply cables (North American and European)

The Oriel Chopper Head includes standard 1.5-inch series flanges, allowing it to be coupled to a wide variety of Oriel instruments and accessories. The enclosed design allows high chopping rates to be utilized in a safe manner while improving performance. The enclosed chopper head design prevents detector saturation from unchopped background light and prevents scattering. The enclosure of the wheel also reduces noise and enhances safety. The 75160NF is automatically included with any order for the LIDA-SRS-KIT Lock-in Digital Amplifier.


采用75160NF型光斩波器，在光学实验中引入光路周期性中断，产生调幅，适用于许多小型光学信号检测方案。调制频率可从4hz控制到2.0 kHz。完全控制可以通过光学斩波控制器的前面板。此外，斩波控制器可通过USB通信接口编程，以设置和测量调制频率，调整中断相位，并通过前面板75160NF执行所有其他可用的操作:斩波控制器、Oriel斩波头及互连电缆、斩波轮组(2、5、12、30光阑)、包含用户手册的USB闪存驱动器、USB驱动程序、GUI软件应用程序和文档化编程示例、电源电缆(北美和欧洲)

Oriel斩波头包括标准1.5英寸系列法兰，允许它连接到各种各样的Oriel仪器和附件。封闭的设计允许在安全的方式使用高斩波率，同时提高性能。封闭斩波头的设计防止了探测器饱和对未斩波背景光和防止散射。车轮的外壳也减少噪音，提高安全性。75160NF自动包含在lida - sr - kit锁定数字放大器的任何订单中。