As the global demand for renewable energy continues to rise, photovoltaic (PV) technology, distinguished by its clean, efficient, and sustainable attributes, is progressively emerging as a leading direction in the global energy transition.

In recent years, China's photovoltaic cell industry has witnessed continuous market expansion, indicating promising prospects for the industry.

Laser technology assumes a pivotal role in the production processes of PV cells, including laser scribing for thin-film cells, film opening for crystalline silicon solar cells, laser doping, laser cutting, laser drilling, and laser edge engraving. According to data, the total market volume for PV laser equipment is 2.246 billion RMB in 2022 and 4.339 billion RMB in 2023, with year-on-year growth rates of 34% in 2022 and 93% in 2023. With the scaling up of production capacity for N-type photovoltaic cells and the continuous iteration of new technologies, the demand for photovoltaic laser equipment is expected to continue growing.

The seed laser, as the core component of the laser, is a crucial factor determining the output parameters, stability, reliability, and lifespan of the laser. For instance, in the case of a picosecond seed laser, the output center wavelength and pulse width directly determine the laser’s output center wavelength and pulse width. Similarly, for a femtosecond seed laser, the compressible pulse width dictates the minimum pulse width of the femtosecond laser. The power stability and pulse width stability of the seed laser establish the upper limits for the laser's power stability and pulse width stability.

During the processing, the seed laser often achieves various processing requirements by altering the laser's frequency, power, wavelength, pulse width, and polarization state. This enables the optimization of the photovoltaic cell’s photoelectric conversion efficiency, cost reduction, and promotes its application in the field of renewable energy.

With the development of the photovoltaic industry and the increasing market demand, the application of seed laser in the photovoltaic industry has become more widespread and critical. In recent years, Optizone has actively dedicated itself to research and development, catering to diverse application needs and product categories within the photovoltaic industry. Optizone has successfully developed seed laser series tailored to the evolving demands of the photovoltaic industry, which includes picosecond passive mode-locked seed laser, femtosecond passive mode-locked seed laser, and Gain-switch Semiconductor Pulse Seed Laser.

Picosecond/Femtosecond Passive Mode-locked Seed Laser

Applications: Picosecond/Femtosecond Seed Laser, Material Analysis, Scientific Research

Features:

Stable saturable absorber mode-locking scheme and fully polarization-maintaining fiber optical path.

Self-healing saturable absorber with multi-point operation, extending the seed laser lifespan to over 20,000 hours.

Feedback control enhances seed laser output stability (≤1% @ 12h).

Unique software and circuit design for maintenance-free, fully automatic optical operation.

In-house optical device production ensures seed laser performance, cost-effectiveness, and reliability.

Key Parameter of Femtosecond Seed Laser

Key Parameter of Picosecond Seed Laser 

Testing Report:

Gain-switch Semiconductor Pulse Seed Laser

Applications: Semiconductor Pulse Seed Laser, Material Analysis, Scientific Research

Features:

The pulse width is as low as 80ps,and the repetition frequency is adjustable from 1 to 200 MHz

High long-term stability of output pulse (<1%RMS@72h)

Low noise, small tail, high beam quality

Suitable for various semiconductor lasers with different central wavelengths

Key Parameter of Semiconductor Pulse Seed Laser

Testing Report:

In recent years, the technology of Optizone’s seed laser series is mature. It has achieved long-term stable production, received validation from numerous customers, and meets the process and performance requirements of specific application scenarios. The series is characterized by the simple structure, low manufacturing cost, stable performance, and maintenance-free.

The photovoltaic industry, as a crucial driving force for the global energy structural transformation, holds vast prospects for development. Optizone is committed to continuous technological innovation, enhancing product quality, and contributing to cost reduction and efficiency improvement in the photovoltaic industry. In addition to independently exploring the solar photovoltaic industry and industrial markets, Optizone is also expanding into various industries such as semiconductor, new displays, consumer electronics, aerospace, and high-value-added industries.