Robust method for long-term energy and pointing stabilization of high energy, high average power solid state lasers.

Autor: Boge R; Extreme Light Infrastructure-Beamlines, FZU AS CR, v.v.i., Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic., Horáček J; Extreme Light Infrastructure-Beamlines, FZU AS CR, v.v.i., Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic., Mazůrek P; Extreme Light Infrastructure-Beamlines, FZU AS CR, v.v.i., Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic., Naylon JA; Extreme Light Infrastructure-Beamlines, FZU AS CR, v.v.i., Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic., Green JT; Extreme Light Infrastructure-Beamlines, FZU AS CR, v.v.i., Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic., Hubka Z; Extreme Light Infrastructure-Beamlines, FZU AS CR, v.v.i., Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic., Šobr V; Extreme Light Infrastructure-Beamlines, FZU AS CR, v.v.i., Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic., Novák J; Extreme Light Infrastructure-Beamlines, FZU AS CR, v.v.i., Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic., Batysta F; Extreme Light Infrastructure-Beamlines, FZU AS CR, v.v.i., Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic., Antipenkov R; Extreme Light Infrastructure-Beamlines, FZU AS CR, v.v.i., Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic., Bakule P; Extreme Light Infrastructure-Beamlines, FZU AS CR, v.v.i., Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic., Rus B; Extreme Light Infrastructure-Beamlines, FZU AS CR, v.v.i., Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic.
Jazyk: angličtina
Zdroj: The Review of scientific instruments [Rev Sci Instrum] 2018 Feb; Vol. 89 (2), pp. 023113.
DOI: 10.1063/1.5018713
Abstrakt: A robust and simple method is presented for ensuring constant energy and pointing of a high average power solid state laser on a target. In addition to providing long-term stability, this scheme also eliminates any drifts in energy or pointing resulting from the initial warm-up after a cold start. This is achieved using two separate feedback loops: one loop stabilizes the pointing of the beam external to the amplifier cavity and the other locks the cavity mode to have optimum overlap with the pump spot on the active medium. The key idea of the cavity mode stabilization is to monitor the overlap of the cavity mode and the gain medium with a camera and control it with an actively controlled, intra-cavity mirror. While this method is demonstrated on a thin-disk regenerative amplifier, it can also be applied to a wide variety of solid state laser amplifiers.
Databáze: MEDLINE
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