As manufacturing technologies continue to advance, industries such as PCB fabrication, UV curing, biomedical research, and microfabrication require increasingly precise ultraviolet light sources. Traditional UV lamps often struggle to maintain consistent output during continuous operation, leading to reduced process stability and lower production efficiency.
The 375nm 10W fiber coupled laser diode is designed to provide a reliable ultraviolet solution for industrial and scientific applications. Combining high optical power, efficient fiber coupling, and water-cooled thermal management, this system delivers stable UV energy for demanding environments where precision and long-term performance are essential.
Its compact architecture and flexible integration capabilities make it suitable for LDI exposure systems, UV curing equipment, fluorescence imaging platforms, and advanced material processing applications.
Why Choose a Fiber Coupled Laser Diode?
A fiber coupled laser diode offers several advantages over conventional UV light sources. By transmitting laser energy through an optical fiber, the system can deliver concentrated ultraviolet power directly to the target area while maintaining installation flexibility.
Unlike traditional lamp-based systems, laser diodes provide controlled wavelength output, improved energy efficiency, and consistent optical performance. These characteristics are particularly important in applications that require repeatable processing results and precise energy delivery.
The 375nm wavelength falls within the UV-A spectrum and is widely used for photoresist exposure, UV curing, fluorescence excitation, and photochemical research.

Key Features of the 375nm 10W Fiber Coupled Laser Diode
High-Power 10W Continuous Output
The module delivers 10W continuous-wave output, providing sufficient ultraviolet energy for industrial exposure and curing processes. Stable power output helps maintain process consistency during extended production cycles.
Efficient Fiber-Coupled Transmission
Equipped with a 105μm optical fiber and 85% coupling efficiency, the system minimizes transmission losses while delivering concentrated UV energy where it is needed. The fiber-coupled design also simplifies integration into complex equipment layouts.
Water-Cooled Thermal Control
Thermal management is critical for high-power ultraviolet laser systems. The integrated water-cooling structure helps maintain stable operating temperatures, supporting reliable performance during continuous operation.
Precise UV-A Wavelength
The 375nm output wavelength is compatible with many UV-sensitive materials, including photoresists, UV inks, adhesives, coatings, and specialty polymers used across industrial manufacturing sectors.
Technical Specifications
- Product Type: Fiber Coupled Laser Diode
- Wavelength: 375nm
- Output Power: 10W CW
- Operating Voltage: 24V DC
- Fiber Core Diameter: 105μm
- Numerical Aperture: NA 0.22
- Fiber Length: 1.5m
- Coupling Efficiency: 85%
- Cooling Method: Water Cooling
- Housing Size: 354 × 230 × 44mm
- Lifetime: Up to 10,000 Hours
Applications
Laser Direct Imaging (LDI)
The 375nm fiber coupled laser diode is widely used in PCB manufacturing equipment for photoresist exposure and fine-pattern imaging. Its stable UV output supports precise circuit formation for HDI boards, multilayer PCBs, and flexible circuits.
UV Curing Systems
The module can be integrated into industrial UV curing systems used for adhesives, coatings, UV inks, and electronic assembly processes that require controlled ultraviolet exposure.
Fluorescence Imaging
The 375nm wavelength is suitable for fluorescence excitation in laboratory instruments, optical analysis systems, and biomedical imaging equipment.
Biomedical Detection and Sensing
Researchers and equipment manufacturers use fiber coupled laser diodes for optical sensing, biochemical analysis, and diagnostic applications that require stable ultraviolet illumination.
Surface Micro-Texture Processing
The concentrated UV beam can support microstructuring, surface modification, material testing, and advanced manufacturing processes involving polymers and specialty materials.
Scientific Research
Universities and research institutions frequently utilize UV laser diodes for photochemical experiments, optical studies, and material characterization projects.
OEM and ODM Customization
Every industrial system has unique integration requirements. To support equipment manufacturers and system developers, BU-LASER provides comprehensive OEM and ODM customization services.
Available options include:
- Custom output power configurations
- Fiber length customization
- Housing modifications
- Input voltage selection
- Optical beam shaping
- Cooling system adaptation
- Mechanical mounting customization
With more than 15 years of laser manufacturing experience, BU-LASER supports customized laser solutions covering wavelengths from 375nm to 1064nm for industrial, medical, scientific, and research applications.
Conclusion
The 375nm 10W fiber coupled laser diode provides a dependable ultraviolet light source for LDI exposure, UV curing, fluorescence imaging, biomedical detection, and scientific research. Combining high optical power, efficient fiber coupling, and water-cooled thermal management, it delivers the stability required for modern industrial environments.
For manufacturers seeking a high-performance UV laser solution, this fiber coupled laser diode offers flexible integration, reliable operation, and consistent ultraviolet energy delivery across a wide range of applications.
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