Low Stray Light Diffraction Gratings
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.
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.
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.
3. Relative Diffraction efficiency
LO-RAY-LIGH® is high efficient.