Fiber Laser System by PhotoMachining
Description
In a fiber laser, the active gain medium is an optical fiber doped with rare earth elements such as erbium, ytterbium, or neodymium.
The fundamental wavelength of fiber lasers is between 1 and 2 µm depending on the dopant and host material. Fiber lasers are available from a few watts to multiple kilowatt output, but micromachining applications will typically use lasers with output of less than 200 W.
These lasers can also be q-switched, so short, high-peak power pulses can be obtained at pulse repetition rates of tens or hundreds of kilohertz. The fundamental wavelength couples extremely well with metals, and fiber lasers have replaced other solid-state and CO₂ lasers in many applications.
Fiber Laser System by PhotoMachining
Specifications |
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|---|---|
| Wavelength: | 1064 nm |
| Average Output Power: | 200 W |
| Pulse Duration: | -----ns |
| Beam Quality (M^2): | -- |
| Max Pulse Repetition Rate: | 100 kHz |
Features
Advantages of fiber lasers over the other types include the following:
Light is already coupled into a flexible fiber: This allows it to be delivered easily to a movable focusing element. This has important benefits for laser cutting, welding, and drilling of metals and polymers.
High output power: Fiber lasers can have active regions several kilometers long, so they can provide very high optical gain. They can support kilowatt levels of continuous output power because of the fiber's high surface area to volume ratio, which allows efficient cooling.
High optical quality: The fiber's wave-guiding properties reduce or eliminate thermal distortion of the optical path, typically producing a diffraction-limited, high-quality optical beam. Since the optical mode is defined by a fixed solid waveguide, the beam quality is maintained without need for adjustment or tuning over the life of the laser, and it is invariant over a wide range of operating conditions. This eliminates the need and cost for beam characterization after manufacture.
Compact size: Fiber lasers are compact compared to rod or gas lasers of comparable power because the fiber can be bent and coiled to save space.
Reliability: Fiber lasers exhibit high vibrational stability, extended lifetime, and maintenance-free turnkey operation.
Cost: These lasers are almost cost competitive with CO₂ lasers to buy ($/W) and also to operate at lower power levels (<200 W); at higher power levels, the cost curves cross.
Applications
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Frequently Asked Questions
The significant advantages discussed before make fiber lasers the fastest growing industrial laser over the past decade, now comprising over 25% of the global industrial laser market. We typically use IPG and SPI fiber lasers with output powers from 10 W to 200 W.
Advantages of fiber lasers over the other types include the following: light is already coupled into a flexible fiber, high output power, high optical quality, compact size, reliability, and cost.
A fiber laser system is a type of laser that uses an optical fiber doped with rare earth elements as the active gain medium.
These lasers are almost cost competitive with CO₂ lasers to buy ($/W) and also to operate at lower power levels (<200 W); at higher power levels, the cost curves cross.
Fiber lasers are available from a few watts to multiple kilowatt output, but micromachining applications will typically use lasers with output of less than 200 W.