Low Stray Light Diffraction Gratings
![Lo-Ray-Ligh](/sites/shimadzu.com/files/opt/products/dif/k25cur0000006y4m-img/oh80jt0000001nih.gif)
Shimadzu’s new holographic exposure method and optimized etching process have made it possible to produce both high-efficient and exceptionally low stray light gratings.
Features
LO-RAY-LIGH® has guaranteed values of stray light at the intermediate position between zero-order and + first-order lights. The values are measured by Shimadzu's laser stray-light-measuring system.
1. Low Stray Light Values
The stray light values are at less than half of conventional gratings.
![stray light values](/sites/shimadzu.com/files/opt/products/dif/k25cur0000006y4m-img/o00034-1.jpg)
Comparison of Conventional Diffraction Gratings vs Low Stray Light Diffraction Grating (LO-RAY-LIGH®)
Schematic of Measuring System
2. Vicinity of First-Order Light
The light intensity at vicinity of first-order light of LO-RAY-LIGH® looks like a profile as if being the silhouette of the mermaid line into the deep sea.
![Stray light values](/sites/shimadzu.com/files/opt/products/dif/k25cur0000006y4m-img/oh80jt0000002b8p.gif)
3. Relative Diffraction efficiency
LO-RAY-LIGH® is high efficient.
![Relative Diffraction efficiency](/sites/shimadzu.com/files/opt/products/dif/k25cur0000006y4m-img/oh80jt0000002b9g.gif)
![Relative Diffraction efficiency](/sites/shimadzu.com/files/opt/products/dif/k25cur0000006y4m-img/oh80jt0000007nc5.gif)