Picosecond pulse fiber laserIt is a laser device based on fiber optic technology that can output picosecond level (1 picosecond=10 ⁻¹ ² seconds) ultra short pulses. It has the characteristics of narrow pulse width, high energy, and high stability, and is widely used in precision machining, optical imaging, scientific research, and industrial fields.

Its workflow is based on the core logic of "pulse generation amplification output", and key technologies include:

Pulse generation: Picosecond level short pulses are achieved through mode locking techniques such as passive mode locking and active mode locking.

Passive mode locking: utilizing nonlinear effects in optical fibers (such as saturation absorption and self phase modulation) to form a stable short pulse sequence of laser in the resonant cavity;

Active mode locking: By periodically modulating the resonant cavity loss through active devices such as electro-optic modulators, a fixed repetition rate picosecond pulse is forcibly generated.

Pulse amplification: The initial weak pulse generated is amplified by a fiber amplifier, which utilizes the high gain characteristics of the fiber to enhance the pulse energy while maintaining a picosecond pulse width (avoiding pulse broadening).

Output and regulation: By using components such as fiber Bragg gratings (frequency selective) and wavelength division multiplexers (beam combining), picosecond pulses of specific wavelength and power are output; Some systems can achieve flexible adjustment of pulse width and repetition frequency through external regulation.

　　Picosecond pulse fiber laserThe pulse width can be less than 10 picoseconds, the peak power is high, and high-precision material removal and microstructure processing can be achieved, reducing the heat affected zone and avoiding material damage. Excellent beam quality, good power stability, with over 100000 startup cycles, suitable for long-term continuous operation.