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激发波长

780~785nm

工作距离

Interchangeable lens

光纤参数

single MM excitation fiber  (50~100 um)

round bundle MM collection  fibers (200/220 μm) using round-to-slit  bundle

N.A. 0.22

滤波器参数

Excitation path: band pass  filter

Collection path: long pass  filter

Optical density 6 at laser  wavelength

探针接头

Collection path: SMA or  FC/PC connector

Excitation path: SMA or  FC/PC connector

背噪声

<10 count/second @ 10mW

What are  VPH diffraction gratings?

The most commonly used gratings are  generally ruled or etched using either a process involving the mechanical  scratching of the surface of a substrate, or exposure of a photoresist layer  deposited on a substrate.where the interference pattern produced by two  coherent light beams is used to expose the photoresist. The diffraction  gratings produced with this process are often called holographic. Both of  these processes are used to create a fine, periodic relief pattern on the surface  of a blank substrate. Such a relief structure can predictably modify the  amplitude and/or phase of the incident light. The superposition of the  effects of many such grooves allows for the angular separation of the  spectral components of the incident light. Depending on whether the light is  reflected from the grooved surface, or transmitted through it, the grating is  called either a reflection or transmission diffraction grating.