kW Class Laser Modules
Our kW-class laser modules consist of diode laser stacks, whose individual beams are shaped and combined into a beam with high energy density by means of simple optical components. Such modules enable direct material processing or efficient pumping of short-pulse solid-state laser systems (pulse duration 10-6 bis 10-9 s) with high pulse energies in the Joule range. The overall pumping power scales with the number of stacks and emitters up to the kW range.
Applications
- Pumping of high-energy class solid-state laser systems (z. B. Yb:YAG, Nd:YAG) with high pulse repetition rates. Such systems are increasingly demanded in research (e.g. X-ray lasers, attosecond spectroscopy, particle accelarators, material processing)
- Direct material processing in industry
The FBH is a member institute of the EuPRAXIA-Konsortium.
Pump module with ~6 kW output power from fiber
Two generations of pump modules
Pump modules, installed for a customer
Wavelengths, Assembly & Typical Data
Wavelengths
- 650 to 1060 nm, e.g. 940 nm for pumping of Yb:YAG thin-disk amplifiers or 780 nm for aluminum processing
Assembly
- Diode laser stacks with lateral cooling and high conversion efficiency (η ~ 60%)
- Geschlossenes Modulgehäuse mit Strom und Kühlwasseranschlüssen
Optional mit integrierter Überwachung der Betriebsparameter
Definierter Strahlausgang oder Faseranschluss
Exemplary Data
- 6 kW modul
- λ = 940 nm
- QCW operation tP = 1 ms, f = 10...200 Hz
- Optical fiber with 1.9 mm core diameter, NA 0.22
- Peak output power from fiber > 5.5 kW
- Electro-optical efficiency ~ 50%
- Average power from fiber > 1 kW
- Peak-power without fiber ~ 7 kW
- SAMBA modul
- λ = 780 nm
- CW operation
- 0,5 mm² spot in working distance
- alternatively coupling into optical fiber with 1 mm core diameter, NA < 0.2
- Output power > 1 kW
- Electro-optical efficiency ~ 50%