Laser Line Filters
Laser Line Filters by Avantier
Avantier specializes in crafting precision laser line filters with exceptional performance characteristics. These optical marvels are designed to work with specific laser wavelengths, ensuring signal clarity and enhanced image contrast by eliminating unwanted background radiation and ambient light. Avantier’s Laser Line Filters boast ultrahigh peak transmission, superior blocking capability, and narrow bandwidth, making them ideal for applications ranging from fluorescence instrumentation to medical laser systems. Furthermore, these filters are known for their environmental stability, angle of incidence tuning, and compliance with stringent standards. Avantier also offers notch filters for specific light rejection needs. Custom orders are welcomed to meet unique requirements.
Laser Line Filters
Purpose of Laser Line Filters
- Laser line filters are precision optical filters with narrow passbands designed to work at specific laser wavelengths.
- They are used to prevent signal distortion, increase image contrast, and eliminate undesirable background radiation and ambient light in various applications.
Applications
These filters find applications in laser-based fluorescence instrumentation, Raman spectroscopy, analytical instruments, and medical laser systems.
Characteristics of Avantier’s Laser Line Filters
- Ultrahigh peak transmission, typically greater than 90%.
- Excellent blocking capability (optical density > 5.0) within ±1% of the laser wavelength.
- Narrow bandwidth with a typical Full Width Half Maximum (FWHM) of less than 0.38% of the laser wavelength.
Notch Filters
Avantier also offers notch filters, which reject a specific band of light while transmitting all other wavelengths.
Environmental Stability
- Filters are dielectric coated using Ion Beam Sputtering (IBS) technology, ensuring environmental stability and a long lifespan.
- Temperature stability with a center wavelength shift of less than 0.02 nm per degree Celsius.
Angle of Incidence Tuning
The center wavelength of the filter can be fine-tuned by adjusting the angle of incidence of the laser beam using the formula provided in the text.
Standard Specifications
- Peak transmittance greater than 90%.
- FWHM typically 0.38% of the laser center wavelength (λc), with a maximum of 0.7% of λc.
- Clear aperture greater than 80%.
- Operating temperature ranges from -45°C to approximately 85°C, with temperature dependence guaranteed to be less than 5 ppm/°C.
- Meets environmental and physical durability standards (MIL-STD-810F and MIL-C-48497A).
- Various mounting options available, including black-anodized aluminum ring mountings.
- Surface quality of 60/40 scratch dig, beam deviation of no more than 11 arc seconds, and tight tolerances on diameter and thickness.
Avantier welcomes custom orders and can design optical systems to meet specific requirements.If you have any specific questions or need additional information, you can contact us for further details or to discuss custom orders tailored to your needs.
Laser wavelength(λc) (nm) |
Peak Transmission |
Typical Bandwidth(nm) |
Blocking Range(λc±1.0%) (nm) |
441.6 |
>90% |
1.7 |
381-437nm and 446-551nm |
457.9 |
>90% |
1.7 |
393-453nm and 462-576nm |
488.0 |
>90% |
1.9 |
415-483nm and 493-625nm |
514.5 |
>90% |
2.0 |
434-509nm and 519-669nm |
532.0 |
>90% |
2.0 |
446-526nm and 537-700nm |
543.5 |
>90% |
2.1 |
454-538nm and 548-719nm |
551.0 |
>90% |
2.1 |
466-555nm and 566-750nm |
568.2 |
>90% |
2.2 |
471-562nm and 574-763nm |
632.8 |
>90% |
2.4 |
515-626nm and 639-885nm |
647.1 |
>90% |
2.5 |
525-640nm and 653-912nm |
780.0 |
>90% |
3.0 |
609-772nm and 787-1201nm |
785.0 |
>90% |
3.0 |
612-777nm and 793-1213nm |
808.0 |
>90% |
3.1 |
625-799nm and 816-1269nm |
830.0 |
>90% |
3.2 |
639-812nm and 838-1324nm |
976.0 |
>90% |
3.7 |
722-966nm and 985-1325nm |
980.0 |
>90% |
3.7 |
724-970nm and 989-1332nm |
1047.1 |
>90% |
4.0 |
963-1036nm and 1057-1398nm |
1064.0 |
>90% |
4.0 |
978-1053nm and 1074-1428nm |
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