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.