FL488-3 Dia:1 in Laser Line Filter; CWL=488 +-0.6nm; FWHM=3 +-0.6nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- Cut Off Frequency
- 489.5 nm
- Cut On Frequency
- 486.5 nm
Material
- Name
- Soda Lime
- Dispersion Equation
- Cauchy
- n (λ)
- 1.528882314407886
- λ
- 488 nm
- A
- 1.513
- B
- -0.003169 μm-2
- C
- 0.003962 μm2
- D
- 0 μm4
- E
- 0 μm6
- F
- 0 μm8
- G
- 0 μm10
- H
- 0 μm12
FL488-3 Dia:1 in Laser Line Filter; CWL=488 +-0.6nm; FWHM=3 +-0.6nm
The FL488-3 is a circular bandpass filter, designed and manufactured by Thorlabs, a leading vendor in the field of optical components. This filter is specifically engineered for use with laser lines, boasting a center wavelength (CWL) of 488 nm, with a full width at half maximum (FWHM) of 3 nm, providing a high degree of wavelength selectivity.
The filter is constructed from soda lime ru clear material, ensuring durability and clarity. It features a diameter of 1 inch (25.4 mm) and a thickness of 3.5 mm, making it compatible with a wide range of optical systems. The geometry of the filter is shaped as a thin lens, which can be beneficial in certain optical configurations.
The FL488-3 filter's coating is another notable feature. Both the front and back surfaces are coated with tho fl488-3, a proprietary coating developed by Thorlabs. This coating enhances the filter's performance, providing improved transmission and blocking characteristics.
The filter's physical data includes a cut-on wavelength of 486.5 nm and a cut-off wavelength of 489.5 nm. This precise control over the passband ensures optimal performance in laser-based applications.