Edmund Optics (EO) has launched its Narrow Laser Line Interference and Broadband Interference filters.
The Narrow Laser Line Interference Filters feature a bandwidth of just 1nm and are typically used to enhance the signal-to-noise ratio of laser-based analytical instrumentation. Primarily used with gas and DPSS lasers, narrow band (1nm) filters are used in the sensor path to eliminate all ambient light (noise) and allow the sensor to detect the laser wavelength.
Using a narrowband interference filter, a system may not require dispersion elements such as prisms or gratings, allowing a lower cost than other alternatives. The filters provide transmissions of greater than 50 per cent and OD greater than four from 200 to 1,150nm wavelength. Each narrow bandwidth filter is mounted in a 12.7mm or 24.5mm diameter metal ring and is designed for ease of integration using EO's C-mount optic mounts. Narrow Laser Line Interference Filters are available for 488nm, 514.5nm, 532nm, 632.8nm and 1,064nm wavelengths.
Edmund Optics' Broadband Diode Interference Filters are suited for use with NIR laser diodes. They are typically used in the laser path, to eliminate noise in the laser diode, itself. Each filter is mounted in a 12.7mm or 25.4mm diameter metal ring. These filters are designed for easy integration using EO's C-mount optic mounts. They provide greater than 70 per cent transmission with blocking greater than OD4. EO's Broadband Diode Interference Filters are available for 880nm, 905nm, 1,300nm and 1,550nm wavelengths with either 12.7mm or 25.4mm diameter metal rings.