Spectral dispersion
Grating: Groove density and focal geometry set dispersion, while the illuminated groove count and slit determine attainable resolution.
Grating
| Grating | |
|---|---|
| Reflective planar line diffraction grating, the number of lines is 300-3600 lines, the shining wavelength is in the range of 250-1000nm, and the grating diffraction efficiency can reach 60%-80% at the shining wavelength. | |
| Features Up to 80% efficiency. Brilliance wavelengths from 250 to 1000nm are available. | General specifications of light grids Grating substrate material: float glass. Finish 60/40. Dimensional tolerances ± 0.5 mm. Efficiency 60%~ 80% @Shine wavelength. Impairment threshold 350mJ/cm 2 @200nsPulsed laser 40W/cm 2 (CW laser). |
| Model | Number of inscriptions ( l/mm ) | Shine wavelength ( nm ) | Shine Corner | Size ( mm ) |
|---|---|---|---|---|
| G-600-250-12.7 | 600 | 250 | 4°18′ | 12.7 2 ×6 |
| G-600-500-12.7 | 600 | 500 | 8°37′ | 25 2 ×10 |
| G-600-500-25 | 600 | 500 | 8°37′ | 25 2 ×10 |
| G-600-640-25 | 600 | 640 | 11°4′ | 12.7 2 ×6 |
| G-600-750-12.7 | 600 | 750 | 13°0′ | 12.7 2 ×6 |
| G-600-750-25 | 600 | 750 | 13°0′ | 25 2 ×10 |
| G-600-1000-25 | 600 | 1000 | 17°27′ | 25 2 ×10 |
| G-1200-250-25 | 1200 | 250 | 8°37′ | 25 2 ×10 |
| G-1200-300-12.7 | 1200 | 300 | 10°22′ | 12.7 2 ×6 |
| G-1200-500-25 | 1200 | 500 | 17°27′ | 25 2 ×10 |
| G-1200-640-25 | 1200 | 640 | 22°35′ | 25 2 ×10 |
| G-1200-750-25 | 1200 | 750 | 26°44′ | 25 2 ×10 |
| G-1200-1000-25 | 1200 | 1000 | 36°52′ | 25 2 ×10 |
| G-1800-250-12.7 | 1800 | 250 | 13°0′ | 12.7 2 ×6 |
| G-1800-300-25 | 1800 | 300 | 15°40′ | 25 2 ×10 |
| G-1800-500-25 | 1800 | 500 | 26°44′ | 25 2 ×10 |
| G-2400-250-12.7 | 2400 | 250 | 17°27′ | 12.7 2 ×6 |
| G-2400-250-25 | 2400 | 250 | 17°27′ | 25 2 ×10 |
| G-3600-200-25 | 3600 | 200 | 21°6′ | 25 2 ×10 |
Application context
Why this design is used
Application fit depends on the ordered configuration; catalog values are separated from fields that still require confirmation.
Laser wavelength selection
Grating: Blaze, coating and polarization determine feedback efficiency and power handling at the selected wavelength.
Engineering reference
Specify Grating from the interfaces inward
Grating is a configurable diffraction grating in the Laser components and accessories family. The final part number should be released only after the optical, mechanical, electrical and environmental fields below are matched to the intended instrument.
A diffraction grating separates wavelengths through groove period and incidence geometry. Groove density, blaze, coated substrate, illuminated aperture and polarization determine efficiency and resolution in the actual spectrometer.
Selection guidance describes the engineering fields that must be checked. It does not assign an option-dependent value that is absent from the catalog record.
Configuration fields to confirm
- Wavelength and order
- State operating band, diffraction order and required order-sorting strategy.
- Groove density
- Choose groove frequency against dispersion, focal length and detector sampling.
- Blaze and efficiency
- Specify blaze wavelength or angle and minimum efficiency for the required polarization.
- Size and substrate
- Confirm ruled area, thickness, substrate, flatness and mounting allowance.
- Coating and power
- Match coating, environment and laser-damage requirement to the source.
- Mounting geometry
- Provide incidence angle, orientation, holder datum and allowed wavefront error.
Qualification sequence
- 1Define the measurement objective and the performance limit that Grating must satisfy.
- 2Freeze wavelength, mechanical, fiber and electrical interfaces before selecting option codes.
- 3Check loss, noise, heat, motion or vibration contributions in the complete system budget.
- 4Confirm the final drawing, pinout, environmental suffix and acceptance test with the quotation.
Technical FAQ
Configuration questions for Grating
What must be specified before ordering Grating?
Confirm wavelength and order, groove density, blaze and efficiency, size and substrate, coating and power, and mounting geometry. These fields are coupled, so the final part number should be checked against the complete instrument rather than selected from the model name alone.
How should Grating be integrated into the system?
A diffraction grating separates wavelengths through groove period and incidence geometry. Groove density, blaze, coated substrate, illuminated aperture and polarization determine efficiency and resolution in the actual spectrometer. Freeze the optical, mechanical and electrical interfaces before releasing the surrounding assembly.
Which documentation should be approved for Grating?
Approve the configuration-specific specification, mechanical drawing, connector or pinout definition, environmental suffix and acceptance-test limits supplied with the quotation. Any field absent from the local record remains a confirmation item, not an assumed capability.