FLH532-4 Premium Bandpass Filter; Dia:25 mm; CWL=532nm; FWHM=4nm

The FLH532-4 Premium Bandpass Filter is a high-quality optical component designed and manufactured by Thorlabs. This filter is specifically engineered for use in applications where precise wavelength selection is required, such as laser systems or spectroscopy.

The filter has a circular shape with a diameter of 25 mm and a thickness of 2 mm, making it compatible with a wide range of optical systems. It is made from UVFS material, identified by the Mal-1965 material ID, which ensures high transmission and excellent optical quality.

The FLH532-4 is a bandpass filter, meaning it allows light within a specific wavelength range to pass through while blocking light outside this range. The central wavelength (CWL) of this filter is 532 nm, which is the wavelength at which the filter has its highest transmission. The full width at half maximum (FWHM) of this filter is 4 nm, indicating the width of the passband at half the maximum transmission.

The filter's physical data includes a cut-on wavelength of 530 nm and a cut-off wavelength of 534 nm. These values represent the boundaries of the passband, with wavelengths shorter than the cut-on and longer than the cut-off being blocked.

The front and back surfaces of the filter are coated with Thorlabs' FLH532-4 coating, which is specifically designed to enhance the filter's performance and durability. The filter's shape is that of a thin lens, which further expands its potential applications in optical systems.

According to the vendor's information, the FLH532-4 is currently in stock and can be purchased directly from Thorlabs' website.