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Beam shaping design for coupling high power diode laser stack to fiber.
Seyed Hamed Ghasemi1, Mohammad-Reza Hantehzadeh, Jamshid Sabbaghzadeh
1Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, 1477893855 Tehran, Iran. Ghasemi@inlc.ir
This study simulates a novel beam shaping technique using a stripe mirror plate and V-Stack mirror to improve diode laser symmetry and power density. The method efficiently couples high power diode laser beams into optical fibers, enabling more compact and cost-effective laser systems.
Area of Science:
- Optics and Photonics
- Laser Technology
- Optical Engineering
Background:
- High power diode laser stacks often suffer from poor beam quality, limiting their applications.
- Efficient beam shaping is crucial for coupling diode laser output into optical fibers.
- Current methods may lack compactness, efficiency, or cost-effectiveness.
Purpose of the Study:
- To simulate and evaluate a novel beam shaping technique for a ten-bar high power diode laser stack.
- To improve beam symmetry and power density for efficient fiber coupling.
- To assess the feasibility of achieving compactness, higher efficiency, and lower cost.
Main Methods:
- Simulation of a beam shaping system incorporating a stripe mirror plate and a V-Stack mirror.
- Analysis of beam rearrangement for improved symmetry and power density.
- Modeling the coupling of the shaped beam into a standard 550 μm core diameter, NA=0.22 fiber.
Main Results:
- The simulated technique effectively reshapes the diode laser beam, enhancing symmetry and power density.
- Successful coupling of the high power diode laser beam into a standard optical fiber was demonstrated.
- The technique shows potential for significant improvements in system compactness and efficiency.
Conclusions:
- The proposed beam shaping technique offers a viable solution for improving high power diode laser performance.
- This method facilitates efficient fiber coupling, leading to more compact and cost-effective diode laser systems.
- The simulation results indicate a promising approach for advanced laser applications.
