A powerful diode-pumped laser source for micro-machining with ps pulses in the infrared, the visible and the ultraviolet

A powerful diode-pumped laser source for micro-machining with ps pulses in the infrared, the visible and the ultraviolet

We report a ps diode-pumped Nd:YVO4 laser system for micro-machining applications. The system consists of a passively mode-locked oscillator followed by a regenerative amplifier. It provides laser pulses at 1064 nm with a pulse duration of 10.2 ps, a repetition rate of 20 kHz and an average output p...

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Veröffentlicht in:Applied physics. B, Lasers and optics Lasers and optics, 2005-03, Vol.80 (3), p.315-320
Hauptverfasser: KLEINBAUER, J, KNAPPE, R, WALLENSTEIN, R
Format: Artikel
Sprache:eng
Schlagworte:
Amplification
Amplifiers
Diode-pumped lasers
Exact sciences and technology
Frequency conversion
harmonic generation, including high-order harmonic generation
Fundamental areas of phenomenology (including applications)
Infrared
Laser optical systems: design and operation
Lasers
LBO
Micromachining
Nonlinear optics
Optics
Oscillators
Physics
Resonators, cavities, amplifiers, arrays, and rings
Ultrafast processes
optical pulse generation and pulse compression
Ultraviolet
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Zusammenfassung:We report a ps diode-pumped Nd:YVO4 laser system for micro-machining applications. The system consists of a passively mode-locked oscillator followed by a regenerative amplifier. It provides laser pulses at 1064 nm with a pulse duration of 10.2 ps, a repetition rate of 20 kHz and an average output power of 10.8 W. This average power corresponds to a pulse energy of 0.54 mJ. Second-harmonic generation in LBO and fourth-harmonic generation in BBO provide visible (532-nm) and ultraviolet (266-nm) radiation with pulse energies of 270 {/content/W7VQJE788Y6JW0VK/xxlarge956.gif}J and 75 {/content/W7VQJE788Y6JW0VK/xxlarge956.gif}J, respectively. Amplification in a diode-pumped single-pass Nd:YVO4 amplifier increases the pulse energy of the fundamental 1064-nm laser pulses to 1 mJ.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-004-1710-4