Fully conductively cooled, diode-pumped Ho:Tm:LuLiF sub(4) laser oscillator/amplifier

A fully conductively cooled and diode-pumped linear Ho:Tm:LuLiF laser oscillator can generate more than 1 J normal mode pulses at a 10 Hz pulse repetition rate where heat pipes are used for cooling pump diodes and laser crystal. As an amplifier, it can amplify the 80 mJ/180 ns pulses into 400 mJ pul...

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Veröffentlicht in:	Optics letters 2012-07, Vol.37 (13), p.2562-2564
Hauptverfasser:	Bai, Y, Yu, J, Petros, M, Trieu, B, Petzar, P, Singh, UN
Format:	Artikel
Sprache:	eng
Schlagworte:	Amplification Amplifiers Conductivity Crystals Lasers Oscillators Pumps Thresholds
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	A fully conductively cooled and diode-pumped linear Ho:Tm:LuLiF laser oscillator can generate more than 1 J normal mode pulses at a 10 Hz pulse repetition rate where heat pipes are used for cooling pump diodes and laser crystal. As an amplifier, it can amplify the 80 mJ/180 ns pulses into 400 mJ pulses before the appearance of amplified spontaneous emission (ASE). The ASE threshold is about 5.6 J with a 40 mm long and side-polished laser crystal. For a 5 mJ input pulse and 5.6 J pump pulse, the double-pass gain exceeds 22.5. If the lateral surface of the laser crystal is fine ground, the ASE threshold can rise to higher than 8 J, but the efficiency will be lower due to large pump diffusion.
ISSN:	0146-9592