FLH635-10 Premium Bandpass Filter; Dia:25 mm; CWL=635nm; FWHM=10nm

The FLH635-10 Premium Bandpass Filter is a high-quality optical component designed and manufactured by Thorlabs. This filter is specifically engineered to allow light transmission within a narrow band of wavelengths, making it an ideal choice for applications that require precise wavelength selection.

The filter features a circular geometry with a diameter of 25 mm and a thickness of 2 mm, ensuring robustness and ease of integration into various optical systems. The base shape is made of UVFS, a material with a high damage threshold, making it suitable for high-power applications.

The FLH635-10 has a center wavelength (CWL) of 635 nm and a full width at half maximum (FWHM) of 10 nm. The CWL represents the wavelength at which the filter's transmission is maximum, while the FWHM defines the width of the transmission band. This combination of parameters makes the filter highly selective, allowing it to effectively reject unwanted wavelengths.

The filter's coating, applied on both the front and back surfaces, is specifically designed to enhance its performance. This coating ensures high transmission within the passband and low reflection at the edges, further improving the filter's selectivity.

The FLH635-10 is available for purchase directly from Thorlabs' website, where it is listed as in stock. This availability, combined with its high-quality construction and precise wavelength selection, makes the FLH635-10 an excellent choice for a wide range of optical applications.