High-power dual-rod Yb:YAG laser
We describe a diode-pumped Yb:YAG laser that produces 1080 W of power cw with 27.5% optical optical efficiency and 532 W Q -switched with M{sup 2}=2.2 and 17% optical-optical efficiency. The laser uses two composite Yb:YAG rods separated by a 90 degree sign quartz rotator for bifocusing compensation. A microlensed diode array end pumps each rod, using a hollow lens duct for pump delivery. By changing resonator parameters we can adjust the fundamental mode size and the output beam quality. Using a flattened Gaussian intensity profile to calculate the mode-fill efficiency and clipping losses, we compare experimental data with modeled output power versus beam quality. (c) 2000 Optical Society of America.
- OSTI ID:
- 20216767
- Journal Information:
- Optics Letters, Journal Name: Optics Letters Journal Issue: 11 Vol. 25; ISSN 0146-9592; ISSN OPLEDP
- Country of Publication:
- United States
- Language:
- English
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