Stacked array diode lasers are diode laser sources formed by closely stacking multiple laser bars in the vertical direction. The output power of a single bar is typically several tens of watts in continuous operation, while in quasi-continuous operation, the peak power can reach 100-200W. By integrating multiple bars, stacked array diode lasers significantly increase laser power and peak power while maintaining a compact structure. With these characteristics, stacked array diode lasers have become the “energy cornerstone” of high-power laser systems and have shown strong momentum in the field of pump sources.

According to data from 2024, the global market size of laser pump sources is approximately 12.5 billion US dollars, and the global market size is expected to maintain double-digit growth. Among them, the domestic market size is about 35.6 billion yuan, with a future synchronous growth rate of approximately 18%, both maintaining rapid growth. In the high-power pump source sub-segment, stacked array diode lasers occupy more than 75% of the market share. As a pump source, stacked array diode laser pump sources can be applied to the high-power fiber laser field, high-power solid-state laser field, scientific research and special laser field, and direct diode laser field, and their market share in each of these fields exceeds 50%. The following is a brief introduction to the application of stacked array pump sources in the scientific research and special laser field.

In the field of scientific research, stack laser arrays are mainly used to drive large-scale scientific facilities and experiments under extreme physical conditions. For instance, the National Ignition Facility (NIF) in the United States and the “Shenguang” series of facilities in China, which are inertial confinement nuclear fusion devices, are about to widely adopt high-energy and high-frequency stack diode laser arrays as pump sources in their new-generation devices. In extreme physical condition experiments, the high energy storage capacity of stack pump sources makes it possible to generate petawatt-level ultrashort laser pulses, which is of great help for basic physics experiments such as studying atomic nucleus structure and antimatter, and promotes high-energy physics and particle acceleration application experiments. Moreover, space science and environmental simulation, quantum technology and cold atomic physics can also enhance the efficiency of experiments by leveraging high-power stack laser arrays.

In the field of specialized lasers. In this field, the stacked array laser is mainly used as a pump source for high-energy solid lasers and direct diode lasers, or directly as a light source. It basically covers three major application directions: directed energy strike systems, laser radar and electro-optical countermeasures, and laser propulsion and communication. In the directed energy strike system, the stacked array laser can not only serve as a pump source for watt-level solid lasers, but also can achieve spectral beam combining or polarization beam combining through multiple groups of stacked arrays, and be directly applied to intercepting groups of unmanned aerial vehicles. If future research on higher power-level laser strike systems is conducted, there will be more extreme requirements for the lifespan, heat dissipation efficiency, and environmental adaptability of the stacked arrays. The laser radar system using stacked arrays can be applied for remote early warning, space target detection, and sensor blind interference. Under the peak power mode of the stacked array, the laser radar system can achieve space target detection over thousands of kilometers. After obtaining the target, it can also interfere or burn the target through specific wavelength stacked array lasers. In the applications of laser propulsion and communication, the high-power stacked array serves as the light source at the transmitting end, which can provide energy for high-altitude long-endurance unmanned aerial vehicles, or serve as the high-power uplink light source in deep-space communication.

Since its establishment in 2010, Beijing RealLight Technology Co.,Ltd. has been dedicated to the research, production and manufacturing of diode lasers. Our company independently developed multiple stacked diode laser module products such as the GS series, AA series, and PA series, with single bar peak power reaching 100W – 200W. These products can be applied in pump sources, lighting sources, material processing and other fields. The wavelength covers 790nm – 812nm, and 940nm – 960nm band products can also be customized. We can also provide ultra-high power diode water-cooled side pump module products to meet your application needs.

Stacked array diode lasers

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