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Laser diode driver for a high-power vertical-cavity surface-emitting laser.
Optics Letters
|February 28, 2025
Summary
A new laser diode driver design principle for high-power vertical-cavity surface-emitting laser (VCSEL) arrays minimizes heat, enabling high current and average power. This novel approach offers a simple, reliable, and economical solution for various applications.
Area of Science:
- Optoelectronics
- Laser Diode Technology
Background:
- High-power vertical-cavity surface-emitting laser (VCSEL) arrays require advanced driver designs.
- Conventional constant-current modulation methods often face thermal limitations.
Purpose of the Study:
- To propose a novel laser diode driver design principle for high-power VCSEL arrays.
- To overcome thermal limitations in existing driver designs.
Main Methods:
- A new VCSEL driver was designed utilizing a voltage-control and current-monitor mechanism.
- Heat generation from the modulation MOSFET was minimized.
Main Results:
- The novel driver design achieved high current, heavy duty cycle, and high average power.
- Continuous Wave (CW), long-pulsed, and Quasi-Continuous Wave (QCW) driver designs were discussed with circuit architectures.
- Experimental verification and burn-in tests confirmed the driver's performance.
Conclusions:
- The proposed VCSEL driver principle is a simple, reliable, and economical solution for high-power VCSEL arrays.
- Potential applications include industrial heating, solid-state pumping, and medical treatments.
