This is a grating suitable for a compact spectrometer with a transmissive optical system, manufactured using Shimadzu's expertise in holographic exposure and etching technology.
Features
- Low alignment sensitivity, making installation onto the device easy
- Low polarization sensitivity
- High efficiency in a specific wavelength range thanks to blazed grooves of master gratings manufactured by holographic exposure and ion-beam etching technology
- Stable quality by precisely replicating from the master gratings
- Specifications can be customized according to your requirements
Application Examples
Compact spectrometer, Hyperspectral camera, Thickness monitor, Raman spectrometer, OCT
Diffraction efficiency (+1 order light, 0 degree incidence, unpolarized light)
* This is a reference value and not guaranteed.
Standard Item List
| Groove density (grooves/mm) |
Code Number | Nominal blaze wavelength (nm) |
|---|---|---|
| 100 | TG010-080-301 | 800 |
| 150 | TG015-060-301 | 600 |
| 200 | TG020-050-301 | 500 |
| 300 | TG030-050-301 | 500 |
| 600 | TG060-050-301 | 500 |
| Grating type | Equally spaced straight-groove replica grating |
|---|---|
| Blank material | BAK4 or equivalent |
| Dimensions (mm) |  |
| Effective area (mm) (on the grating surface and the incident surface) |
Total area less a 2mm strip around the perimeter |
| Groove density tolerance | ±0.5 grooves/mm |
| Scratches and Digs | 80-50 (in accordance with MIL-O-13830A) |
| Coating on grating surface | None |
| AR coating on Incident surface | MgF2 single-layer film |
- *The grating grooves are formed with resin.
- *The external appearances and specifications are subject to change without notice.
- *The nominal blaze wavelength is the wavelength at which the maximum diffraction efficiency occurs at 0 degree incidence under unpolarized light. No one to guarantee the wavelength of the maximum diffraction efficiency.
- *Be sure to prevent contact touching the diffraction grating surface and the incident surface as this can cause a significant deterioration of optical characteristics.
- *Be sure to prevent condensation as this can cause a significant deterioration of optical characteristics.
Outline Drawing（This drawing is drawn as a third angle projection 
)
Example of Optical Mount
The Grating Equations for Transmission Gratings
Shimadzu’s transmission gratings are used in the way shown in the upper figure, with light entering at an angle perpendicular to the incident surface of the grating. In this case, α = 0 and grating equation is the following:
sinβ=Nmλ
where β is the diffraction angle, N is the groove density, m is the order of diffraction, and λ is the wavelength. Please use the order of diffraction m = +1.
