Power-scaling of nonlinear-mirror modelocked thin-disk lasers

被引：12

作者：

Graumann, Ivan J. ^{[1
]}

Saltarelli, Francesco ^{[1
]}

Lang, Lukas ^{[1
]}

Wittwer, Valentin J. ^{[2
]}

Suedmeyer, Thomas ^{[2
]}

Phillips, Christopher R. ^{[1
]}

Keller, Ursula ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Inst Quantum Elect, CH-8093 Zurich, Switzerland

[2] Univ Neuchatel, Lab Temps Frequence, CH-2000 Neuchatel, Switzerland

来源：

OPTICS EXPRESS | 2019年 / 27卷 / 26期

关键词：

BOUNCE GEOMETRY LASER; MODE-LOCKING; AVERAGE-POWER; MU-J; PULSE GENERATION; KW; FEMTOSECOND; ENERGY; OSCILLATORS; MJ;

D O I：

10.1364/OE.27.037349

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a first power-scaled nonlinear-mirror (NLM) modelocked thin-disk laser based on an Yb-doped gain material. The laser oscillator delivers average output powers up to 87 W and peak powers up to 14.7 MW with sub-600-femtosecond pulses at approximate to 9-MHz repetition rate. We demonstrate a threefold improvement in average output power and sixfold improvement in pulse energy compared to previous NLM-modelocking results. We obtain peak powers in excess of 10 MW for the first time from an NLM-modelocked laser oscillator. In our laser, the NLM is assisted by a semiconductor saturable absorber mirror (SESAM) to reliably initiate pulsed operation. We validate the high-power suitability of the NLM modelocking technique using low-absorption chi((2)) crystals and optimized dichroic-mirror coating designs. Furthermore, we discuss stability against Q-switching and study how the tuning of the nonlinear mirror affects the laser performance. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：37349 / 37363

页数：15

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