Dielectric mirror

dichroicsquareNd:YAG laser

Nd:YAG Dual-Band DBHR Mirrors are designed to reflect two wavelengths of Nd:YAG laser fundamental (1064 nm) and harmonic (532, 355, 266 nm). Custom materials, size, shape, AOI, LIDT and other characteristics available. What is Nd:YAG Dual Nand (DBHR) Mirror Nd:YAG dual band (DBHR) mirror is an optical component coated with dielectric thin-film coating stack. This mirror is specifically designed to reflect two of Nd:YAG laser wavelengths (e.g. Fundamental (1064 nm) and second harmonic (532 nm)) at the time. Unlike dichroic mirrors (harmonic separators) which are designed to transmit one wavelength and reflect another, DBHR mirrors are specifically used to direct both wavelengths in the same direction within the optical system. Although Nd:YAG DBHR mirrors are great replacement for BBHR mirrors, due to higher reflection and laser induced damage threshold (LIDT) at design wavelengths. Also, one Nd:YAG dual band (DBHR) mirror can replace two Nd:YAG laser line (HR) mirrors. It can be very cost beneficial (only one coating run for this double-purpose component), but we just recommend to take into account lower LIDT and possible lower reflection value. How Nd:YAG Dual Band (DHBR) Mirrors are manufactured? Nd:YAG dual band (DBHR) mirrors production is very similar to other dielectric mirrors and also starts with optical substrate preparation – polishing them. Then, once coating design is finished, aiming for two specific Nd:YAG wavelengths, these substrates are coated using one of the optical coating technologies and Nd:YAG dual band DBHR mirror is produced. Final optical metrology is conducted before stocking or sending these mirrors to a customer.