Significantly reduced power costs, coupled with no consumables, no spare parts and low maintenance requirements, and no warm-up time requirements, ultimately lead to considerable cost optimization. Fiber lasers provide pulse energies from several joules to tens of joules with pulse widths from microseconds to milliseconds. They also provide several times higher maximum average power (from 150W to more than 2kW) at pulse repetition frequencies up to 50KHz. In addition, the laser pointer can also work in modulation mode, with a duty cycle of up to 100%.
A 20kW peak power fiber laser can operate at 2kW in CW or pulse mode, and generate 200 joules of pulse energy at a repetition rate of 100Hz, 20 Joules at 1kHz, or 4 at a repetition rate of 5kHz Joule’s pulse energy.
Due to its higher average power and pulse repetition frequency, QCW fiber laser significantly improves the processing speed and production efficiency. For example, when cutting dilution holes or windows in aerospace components, most lasers have a cutting feed rate of 5 to 10 IPM depending on the part structure and material thickness. However, when using the QCW fiber laser to cut the same hole on the same part, the feed rate can reach 20-30IPM, or even higher.
One of the advantages of the operation mode, pulse modulation and shaping fiber laser is the ability to quickly increase and decrease the power level, and can switch online from pulse mode to continuous operation mode. Given that there is no thermal lens in the fiber resonator and the fast response of the pump diode, this can be achieved, but this cannot be achieved if a flash pump laser is used.
A single fiber green laser pointer pulse can be modulated using analog control or an internal pulse generator to achieve the optimal time pulse shape required for any particular application. The operator can also pre-program the required pulse sequence using customized repetition frequency and power modulation. When dealing with complex parts (such as acute angles and narrow holes) or highly reflective and sensitive materials, the operator can control pulse width, duty cycle, frequency, pulse energy and average power in real time. QCW lasers provide excellent pulse shaping functions for the generation of shaped pulses, and their modulation capabilities surpass other technologies.