1570/3 nm近红外带通滤光片
- 透过率Tavg > 90%， 1568.5 – 1571.5 nm
- 中心波长 1570 nm，GMBW带宽 3 nm
- 带宽FWHM 10 nm
NIR01-1570/3-25
Description
1570/3 nm 近红外带通滤光片
滤光片型号：NIR01-1570/3-25
Theoretical Spectrum for Part Number:NIR01-1570/3-25
NIR01-1570/3-25 近红外带通滤光片透过率曲线，美国Semrock
1570/3 nm 近红外带通滤光片，25 mm直径，厚度3.5 mm
Semrock的离子束溅射镀膜工艺可用于制造具有精确光谱特征（锐边，通带等）的近红外带通滤光片。近红外带通滤光片与1570nm掺钕钇铝石榴石泵浦光参量振荡器可以很好的匹配。
近红外带通滤光片是很好的激光消杂或检测滤光片，它们透过特定的激光波长，并在整个InGaAs探测器响应范围（850-1750nm）内几乎消除背景噪声。应用包括激光雷达、遥感、测距和激光诱导击穿光谱（LIBS）。
滤光片参数：
| Optical Specifications | Value |
|---|---|
| Transmission Band 1 | Tabs > 90% 1568.5 – 1571.5 nm |
| Blocking Band 1 | ODavg > 5 850 – 1554.3 nm |
| Blocking Band 2 | ODavg > 6 1444.4 – 1546.45 nm |
| Blocking Band 3 | ODavg > 6 1593.55 – 1727 nm |
| Blocking Band 4 | ODavg > 5 1585.7 – 1750 nm |
| Center Wavelength 1 | 1570 nm |
| Guaranteed Minimum Bandwidth 1 | 3 nm |
| FWHM Bandwidth 1 (nominal) | 8.9 nm |
| General Filter Specifications | Value |
| Angle of Incidence | 0 ± 2 degrees |
| Optical Damage Rating | 1 J/cm². at 1570 nm (10 ns pulse width) |
| Physical Filter Specifications | Value |
| Transverse Dimensions (diameter) | 25 mm |
| Transverse Tolerance | + 0.0 / – 0.1 mm |
| Filter Thickness (mounted) | 3.5 mm |
| Filter Thickness Tolerance (mounted) | ± 0.1 mm |
| Clear Aperture | ≥ 22 mm |
| Scratch-Dig | 60-40 |
| Filter Thickness (unmounted) | 2.0 mm |
| Filter Thickness Tolerance (unmounted) | ± 0.1 mm |
| Orientation | Arrow on ring indicates preferred direction of propagation of light |
