Table 1. Characteristics of plane gratings installed at FlexPES.
| Groove density (lines mm−1) | Optical area (mm) | Substrate | Coating | Slope errors (arcsec) | Blaze angle (°) | |
|---|---|---|---|---|---|---|
| PG1 | 1221 | 110 × 30 | Si | Au | 0.1 | 1.35 |
| PG2 | 400 | 110 × 30 | Si | Au | 0.04 | 1.55 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.