| Number | Line density (l/mm) | Blaze wavelength (nm) | Blaze angle | Scribing area (H×W, mm²) |
| JY-039 | 250 | 800 | 5.7° | 25×25&50×50 |
| JY-040 | 250 | 1650 | 11.9° | 25×25&50×50 |
Key Features
- NIR-SWIR Optimized Performance: Specifically engineered for the 800nm-1650nm range, covering critical near-infrared and shortwave infrared bands used in telecommunications (O, E, S, C, L bands), fiber optic sensing, and semiconductor analysis.
- 250 l/mm Groove Density: The 250 l/mm groove density is ideal for NIR applications, providing excellent dispersion across the 800-1650nm range while maintaining high throughput. This lower density ensures optimal efficiency for longer wavelengths where wider groove spacing is required.
- Precision Ruled for Low NIR Scatter: Advanced ruling techniques create ultra-smooth groove profiles, minimizing scattering in the NIR region and ensuring that the plane grating diffraction efficiency translates into clean, high signal-to-noise ratio spectral data.
- High-Efficiency NIR Coatings: Features specialized coatings optimized for near-infrared reflectivity, maximizing system throughput and ensuring stable performance across the full 800-1650nm wavelength range.
- Excellent Wavefront Quality: Manufactured on high-quality substrates with exceptional flatness, guaranteeing minimal wavefront distortion-critical for maintaining focus and resolution in NIR optical systems.
Applications
This NIR-optimized plane reflection grating is an essential component for instruments operating in the near-infrared and shortwave infrared spectrum:
- Optical Spectrum Analyzers (OSA): Serves as the core dispersive element for instruments characterizing laser sources, optical amplifiers, and passive components in fiber optic communication systems operating in the 800-1650nm range.
- NIR Spectroscopy: Critical for analyzing materials with spectral signatures in the NIR region, including agricultural products (moisture, protein content), pharmaceuticals (polymorph identification), and polymers.
- Fiber Optic Sensing Systems: Used in distributed sensing systems (e.g., DTS, DAS) where precise wavelength discrimination is required for temperature, strain, and vibration monitoring.
- Plane Grating Monochromator: Ideal for monochromators in tunable NIR light sources, laser wavelength selection, and spectral scanning applications.
- Semiconductor Inspection: Enables analysis of silicon, germanium, and III-V compound semiconductor materials that have significant optical properties in the NIR region.
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