780 nm Laser Line Bandpass Filter

The MP-LLF-780 is an ultra-narrow laser-line bandpass filter specifically designed for the 780 nm laser wavelength. It is intended to transmit the 780 nm laser light with high efficiency while providing strong rejection of off-band stray light, background radiation, and unwanted wavelengths on both sides of the laser line.The filter offers a transmission T > 90 % at the 780 nm laser wavelength and a typical FWHM bandwidth of only 3.0 nm, achieving a very narrow spectral selection range while maintaining high throughput for the target laser. Multiple deep-blocking zones are provided on both sides of 780 nm, with some regions reaching ODabs > 6. This filter is ideal for optical systems that demand high spectral purity, stray-light suppression, and precise laser-wavelength selection, such as 780 nm diode laser systems, laser spectroscopy, atomic physics experiments, laser detection, optical sensing, and research-grade optical instruments.