Article

Power scaling of a high-repetition-rate enhancement cavity

Fraunhofer IOF DOI:Optics Letters, Vol.35 (2010), No.12, pp.2052-2054

ABSTRACT A passive optical resonator is used to enhance the power of a pulsed 78MHz repetition rate Yb laser providing 200fs pulses. We find limitations relating to the achievable time-averaged and peak power, which we distinguish by varying the duration of the input pulses. An intracavity average power of 18kW is generated with close to Fourier-limited pulses of 10W average power. Beyond this power level, intensity-related effects lead to resonator instabilities, which can be removed by chirping the seed laser pulses. By extending the pulse duration in this way to 2ps, we could obtain 72kW of intracavity circulating power with 50W of input power.

0 0
 · 
0 Bookmarks
 · 
44 Views
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Keywords

achievable time-averaged
 
chirping
 
Fourier-limited pulses
 
input power
 
input pulses
 
intracavity
 
intracavity average power
 
passive optical resonator
 
power level
 
pulsed 78MHz repetition rate Yb laser
 
resonator instabilities
 
seed laser pulses