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
Laser Line Filters
Laser Line Filters

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

Laser Line Filters

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