Delivering Efficient and Stable Pumping Solutions for High-Energy Solid-State Lasers

Semiconductor diode side-pumped modules have become an ideal pumping solution for medium- and high-energy solid-state lasers due to their long effective pumping area and excellent capability for high-power energy injection.

With the continuous evolution of laser systems toward higher power, higher repetition rates, and higher duty cycles, conventional side-pumped modules face increasing technical challenges. Under high-power operating conditions, uneven pump energy distribution inside the gain medium can result in:

Asymmetric thermal lens effects;

Complex self-focusing phenomena;

Degraded beam quality;

Potential damage to optical components.

These issues significantly affect the output stability and long-term reliability of high-energy laser systems.

To overcome these challenges, Lumispot has developed advanced diode side-pumped gain module technology with breakthroughs in high-power pump integration and gain distribution uniformity optimization.

The newly developed side-pumped gain modules achieve:

Maximum duty cycle up to 25%

Gain distribution uniformity above 90%

High-power pump integration capability up to 80kW

By effectively reducing thermal effects and improving pump uniformity, these modules provide stable and efficient pumping solutions for high-energy solid-state lasers used in industrial processing, scientific research, and advanced laser applications.

Advanced Design for High Performance

The modules utilize Lumispot’s independently developed high-efficiency and high-reliability semiconductor laser diode bars as the core pump source.

By integrating advanced technologies including:

Semiconductor chip design;

Optical system design;

Mechanical structure optimization;

Thermal simulation;

Fluid simulation;

the modules achieve outstanding performance with:

High pump power capability;

High efficiency;

Excellent gain uniformity;

Compact structure;

Long-term operational reliability.

These advantages make them an ideal pump source solution for high-energy solid-state laser systems.

Key Product Advantages

1. High-Power Pumping Capability

Based on proprietary high-power semiconductor laser diode bars, the modules adopt a multi-dimensional side-pumping structure with high-density integrated packaging technology to achieve efficient high-power pump delivery.

Performance highlights:

Up to 600W 1064nm laser output power under CW operation

Up to 80kW pump power integration under QCW operation

Maximum duty cycle up to 25%

The QCW side-pumped modules support high repetition rate and high duty cycle operation, meeting the demanding requirements of industrial processing and high-energy laser applications.

2. High Pumping Efficiency

The module design has been optimized from semiconductor materials, chip structures, and packaging technologies.

Key technologies include:

Optimized epitaxial material structures to reduce carrier absorption losses;

Improved electro-optical conversion efficiency;

Precise wavelength control through advanced growth processes.

Through comprehensive optimization, the modules achieve optical-to-optical conversion efficiency exceeding 45%–50%, improving pumping efficiency while reducing overall system power consumption.

3. Excellent Gain Distribution Uniformity

Uniform pump distribution is critical for maintaining high beam quality and stable laser output.

Lumispot has developed innovative pump homogenization technology to achieve uniform energy distribution within the gain medium.

With gain distribution uniformity exceeding 90%, the modules effectively suppress:

Non-uniform thermal effects;

Thermal lens distortion;

Self-focusing effects.

As a result, solid-state lasers can achieve improved beam quality, higher stability, and better overall performance.

4. Enhanced Gain Performance

By combining:

Precise pump wavelength control technology;

Advanced pump homogenization technology;

High-power pump integration technology;

the module significantly improves excitation efficiency of the gain medium, providing stronger and more stable gain output for high-energy laser systems.

5. High Reliability for Long-Term Operation

Reliability is essential for industrial laser applications.

The modules incorporate:

Hard solder bonding technology;

Advanced thermal management technology;

Optimized cooling structure design.

These technologies improve packaging reliability, reduce thermal stress during high-power operation, and ensure stable long-term performance under high-power and high-duty-cycle conditions.

The designed operational lifetime exceeds 20,000 hours, meeting the requirements of industrial-grade continuous operation.

6. Flexible Compatibility and Customization

To meet different solid-state laser system requirements, Lumispot provides customized side-pumped gain module solutions compatible with various gain media, including:

Nd:YAG

Nd:YLF

Er:YAG

Nd:YVO₄

The modules support gain media with diameters ranging from Φ2mm to Φ25mm, enabling flexible integration into different laser architectures according to customer requirements.

7. Technical Highlights

CW Series

QCW Series

8. Applications

1. High-Energy Solid-State Laser Systems

Diode side-pumped modules provide high-power and highly uniform pumping for solid-state laser systems, enabling stable operation with high output energy and excellent beam quality. They are widely used in high-energy Nd:YAG, Nd:YLF, and other diode-pumped solid-state laser platforms.

2. Industrial Laser Processing

With high power capability, high reliability, and long operational lifetime, diode side-pumped modules are suitable for various industrial laser processing applications, including laser welding, laser cutting, laser drilling, surface treatment, and precision manufacturing.

3. Laser Marking and Precision Manufacturing

The excellent gain distribution uniformity and stable output performance of side-pumped modules improve laser processing consistency and accuracy, making them suitable for precision marking, micro-processing, and advanced manufacturing systems.

4. Laser Ranging and Detection Systems

High-power solid-state lasers based on diode side-pumped modules provide high peak energy and stable laser output, supporting applications such as long-range laser ranging, target detection, optical sensing, and measurement systems.

5. Scientific Research and Customized Laser Systems

With high-power pumping capability, flexible configuration, and excellent reliability, diode side-pumped modules are ideal for scientific research platforms, high-energy physics experiments, and customized laser systems requiring high stability and precise control.