Raman Long Pass Edge Filters / RSF
It is available to cut the excitation laser beam and extracted with high transmittance Raman shifted light on the longer wavelength side with a sharp rise.
It can be used to detect weak light of the Raman scattering.
At the wavelength of the laser specified it has excellent light-blocking properties of OD6 and in the transmission range it is a filter with a transmittance of more than 90%. (80% or more for RSF-25C-325RU)Because it is a dielectric multilayer coating, there is almost no absorption of light by the coating.
Common Specifications
| Coating | Dielectric multi-layer coating |  |
|---|---|---|
| Incident Angle | 0° | |
| Surface Quality (Scratch-Dig) | 60－40 |
| Schematic | Outline Drawing |
|---|---|
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| Part Number | High transmittance Range Wavelength |
High transmittance Range Transmittance |
Blocking Range laser Wavelength |
Blocking Range Optical Density (average) |
|---|---|---|---|---|
| RSF-25C-325RU | 329.2 - 733.1nm | ＞80% | 325nm | 6 |
| RSF-25C-355RU | 359.6 - 800.8nm | ＞90% | 355nm | 6 |
| RSF-25C-364RU | 368.5 - 820.6nm | ＞90% | 363.8nm | 6 |
| RSF-25C-442RU | 447.3 - 996.1nm | ＞90% | 441.6nm | 6 |
| RSF-25C-458RU | 463.9 - 1032.9nm | ＞90% | 457.9nm | 6 |
| RSF-25C-473RU | 479.1 - 683.9nm | ＞90% | 473nm | 6 |
| RSF-25C-488RU | 494.3 - 1100.8nm | ＞90% | 488nm | 6 |
| RSF-25C-514RU | 521.2 - 1160.5nm | ＞90% | 514.5nm | 6 |
| RSF-25C-532RU | 538.9 - 1200.0nm | ＞90% | 532nm | 6 |
| RSF-25C-561RU | 568.7 - 1266.3nm | ＞90% | 561.4nm | 6 |
| RSF-25C-568RU | 575.6 - 1281.7nm | ＞90% | 568.2nm | 6 |
| RSF-25C-633RU | 641.0 - 1427.4nm | ＞90% | 632.8nm | 6 |
| RSF-25C-647RU | 655.5 - 1441.9nm | ＞90% | 647.1nm | 6 |
| RSF-25C-664RU | 672.6 - 1497.7nm | ＞90% | 664nm | 6 |
| RSF-25C-780RU | 790.1 - 1008.0nm | ＞90% | 780nm | 6 |
| RSF-25C-785RU | 804.0 - 1500.0nm | ＞90% | 785nm | 6 |
| RSF-25C-808RU | 818.5 - 1822.6nm | ＞90% | 808nm | 6 |
| RSF-25C-830RU | 840.8 - 1872.2nm | ＞90% | 830nm | 6 |
| RSF-25C-980RU | 992.7 - 2000.0nm | ＞90% | 980nm | 6 |
| RSF-25C-1064RU | 1077.8 - 2000.0nm | ＞90% | 1064nm | 6 |
| RSF-25C-1319RU | 1336.1 - 2000.0nm | ＞90% | 1319nm | 6 |
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