Optical Filters

Semrock has announced new filters for the efficient isolation of individual lines of high-power mercury arc lamps. Each filter obtains maximum throughput of the desired mercury line through passband transmission and optimization of the filter design. The non-absorbing blocking and fused silica substrate ensures that undesired mercury lines and other background light are effectively eliminated without the risk of filter solarization. The new MaxLamp family has been launched with mercury arc lamp filters to isolate the popular 365 nm i-line and the critical 254 nm UV line. These bandpass filters offer an average transmission of > 93% and > 65% over the 365 nm and 254 nm bands respectively, yet with higher and wider out-of-band blocking than incumbent filters.