A beam combiner is a semi-transmissive mirror that combines two (or more) wavelengths of light into a single optical path through transmission and reflection, respectively. The beam combiner usually transmits infrared light and reflects visible light (beam combiners are used when the infrared CO2 high-power laser uses a helium-neon visible diode laser to straighten the light path).
1. Short-wave pass beam combiner (45 degrees): T>97%@960-980nm/R>97%@1020-1040nm
2. Long-pass beam combiner (45 degrees): R>95%@1041nm/T>95%@1065nm
laser cutting, laser welding, laser cladding and laser medical treatment and other fields.