Laser Line Filters
Avantier specializes in crafting precision laser line bandpass filters with advanced performance characteristics tailored for specific laser sources. These filters feature a highly reflective side that enhances signal clarity and contrast by blocking unwanted background radiation and ambient light. With superior blocking glass and epoxies, Avantier’s laser line bandpass filters maintain exceptional environmental stability, even under thermal load, making them ideal for applications such as fluorescence instrumentation and medical laser systems. The filters offer ultra-high peak transmission and a narrow bandwidth, while their carefully selected index of refraction ensures precise control over the angle of incidence. Additionally, Avantier provides edge filters and notch filters for specialized light rejection needs. Custom orders are welcomed to meet unique application requirements.
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
- Laser-based fluorescence instrumentation
- Raman spectroscopy and other analytical instruments
- Medical laser systems
Characteristics of Avantier’s Laser Line Filters
- Ultra high 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.
Applications
- Laser-based fluorescence instrumentation
- Raman spectroscopy and other analytical instruments
- Medical laser systems
Characteristics of Avantier’s Laser Line Filters
- Ultra high 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.
Features
- 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.
- 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 | >90% |
FWHM | typically 0.38% of the laser center wavelength (λc), with a maximum of 0.7% of λc |
Surface Quality | 60/40 |
Clear Aperture | >80% |
Beak Deviation | < 11 arc secondstight tolerances on diameter and thickness |
Operating Temperature | from -45°C to approximately 85°Cwith temperature dependence guaranteed to be less than 5 ppm/°C |
Environmental and Physical Durability | MIL-STD-810F, MIL-C-48497A |
Mounting | Various mounting options available, including black-anodized aluminum ring mountings |
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 |
Custom Laser Line Filters
Avantier welcomes custom orders and can design optical systems to meet specific requirements. If you have any specific questions or need additional information, please contact us for further details or to discuss your custom Laser Line Filters project tailored to your needs.
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