Shaanxi Ireeda Protective Technology Co., Ltd.
Engineer Manager : Ms.Melin
WhatsApp: +8618291418396
E-mail: melin@ireeda.com
Keywords
Beam Combiner; Dichroic Beam Splitter; Laser Combiner Mirror; 45 Degree Dichroic; Harmonic Separator; Coaxial Alignment Optics; Thin Film Polarizer (if applicable); Hard Dielectric Coating.
Overview
IREEDA Precision Beam Combiners are essential high-power dichroic mirrors designed for the seamless integration of different laser wavelengths into a single optical axis. Typically utilized in fiber laser systems, they allow the invisible high-power processing beam (1064nm or 532nm) to be reflected with minimal loss, while simultaneously transmitting the visible pilot laser (650nm) for precise target alignment.
Engineered with Ion-Assisted Deposition (IAD) technology, our combiners feature a high-density dielectric coating that offers superior environmental stability and an exceptional laser damage threshold, making them the ideal choice for multi-kilowatt industrial laser systems.
Professional Highlights
- Scientific-Grade Surface Quality: Polished to 20/10 Scratch-Dig and λ/4 flatness, ensuring zero wavefront distortion and maintaining excellent beam quality (M2) for the reflected laser.
- Optimized Spectral Performance: Achieves an industry-leading Reflectivity R>99.8% at 1064nm/532nm and Transmission T>85% at 650nm, providing a bright, clear red-light guide without compromising main laser power.
- Thermal Lensing Mitigation: Utilizing UV-Grade Fused Silica (Quartz) substrates, our combiners exhibit extremely low absorption (<10 ppm), effectively preventing "thermal lensing" effects and focal shift during long-term high-power operation.
- Sophisticated AR/HR Coating: S1 side features high-reflectance (HR) dichroic coating; S2 side is optimized with Broadband AR coating (R<0.2%) for 650nm to eliminate secondary reflections (ghosting) and maximize visibility.
- Precision Alignment Specs: Guaranteed parallelism of <1 arc minute and an AOI of exactly 45°, facilitating easy integration into standard industrial laser marking and cutting heads.
Specification
Product Name
Beam Combiner (Reflects 532nm & 1064nm / Transmits 650nm)
Material
K9 optical glass / Fused silica
Dimensions
φ20 mm or φ25 mm
Angle of Incidence
45°
Surface S1
Reflectance @ 532 nm & 1064 nm
R > 99.8% (45°)
Reflectance @ 650 nm
R <0.5% (45°)
Surface S2
Reflectance @ 650 nm
R < 0.2% (45°)
Damage Threshold
> 5 J/cm² (10 ns, 10 Hz) typical
Surface Quality
40-20 scratch/dig
Surface Figure
λ/4 @ 633 nm
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