scholarly journals Distributed Kerr Lens Mode-Locked Yb:YAG Thin-Disk Oscillator

2022 ◽  
Vol 2022 ◽  
pp. 1-8
Author(s):  
Jinwei Zhang ◽  
Markus Pӧtzlberger ◽  
Qing Wang ◽  
Jonathan Brons ◽  
Marcus Seidel ◽  
...  
Keyword(s):  
High Power ◽  
Average Power ◽  
Ultrashort Pulses ◽  
Laser Cavity ◽  
Mode Locking ◽  
Gain Medium ◽  
Thin Disk ◽  
Narrow Bandwidth ◽  
Cavity Modes ◽  
High Power Output

Ultrafast laser oscillators are indispensable tools for diverse applications in scientific research and industry. When the phases of the longitudinal laser cavity modes are locked, pulses as short as a few femtoseconds can be generated. As most high-power oscillators are based on narrow-bandwidth materials, the achievable duration for high-power output is usually limited. Here, we present a distributed Kerr lens mode-locked Yb:YAG thin-disk oscillator which generates sub-50 fs pulses with spectral widths far broader than the emission bandwidth of the gain medium at full width at half maximum. Simulations were also carried out, indicating good qualitative agreement with the experimental results. Our proof-of-concept study shows that this new mode-locking technique is pulse energy and average power scalable and applicable to other types of gain media, which may lead to new records in the generation of ultrashort pulses.

scholarly journals High-power modelocked thin-disk oscillators as potential technology for high-rate material processing

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Yicheng Wang ◽  
Sergei Tomilov ◽  
Clara J. Saraceno
Keyword(s):  
Material Processing ◽  
High Power ◽  
High Speed ◽  
Average Power ◽  
Ultrashort Pulses ◽  
Thin Disk ◽  
High Rate ◽  
High Average Power ◽  
Technological Advances ◽  
Short Time

Abstract High average power femtosecond lasers have made spectacular progress in the last decades – moving from laboratory-based systems with maximum average powers of tens of watts to kilowatt-class mature industrial systems in a short time. The availability of such systems opens new possibilities in many fields; one of the most prominent ones that have driven many of these technological advances is precise high-speed material processing, where ultrashort pulses have long been recognized to provide highest precision processing of virtually any material, and high average power extends these capabilities to highest processing rates. Here, we focus our attention on one high-average power technology with large unexplored potential for this specific application: directly modelocked multi-MHz repetition frequency high-power thin-disk oscillators. We review their latest state-of-the-art and discuss future directions and challenges, specifically with this application field in mind.

scholarly journals High-power broadband supercontinuum generation through a simple narrow-bandwidth FBGs-based fiber laser cavity

2022 ◽  
Vol 20 (1) ◽  
pp. 011405
Author(s):  
Song Zhang ◽  
Man Jiang ◽  
Can Li ◽  
Rongtao Su ◽  
Pu Zhou ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Laser Cavity ◽  
Supercontinuum Generation ◽  
Narrow Bandwidth

High power Kerr-lens mode-locking of Yb:YAG and Yb:CALGO thin-disk oscillators

2014 ◽  
Author(s):  
Jonathan Brons ◽  
Vladimir Pervak ◽  
Elena Fedulova ◽  
Marcus Seidel ◽  
Dominik Bauer ◽  
...  
Keyword(s):  
High Power ◽  
Mode Locking ◽  
Thin Disk

scholarly journals Sub-40-fs high-power Yb:CALYO laser pumped by single-mode fiber laser

2019 ◽  
Vol 7 ◽  
Author(s):  
Wenlong Tian ◽  
Geyang Wang ◽  
Dacheng Zhang ◽  
Jiangfeng Zhu ◽  
Zhaohua Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Fiber Laser ◽  
Pulse Duration ◽  
Saturable Absorber ◽  
High Power ◽  
Average Power ◽  
Single Mode ◽  
Mode Locking ◽  
Single Mode Fiber ◽  
Passive Mode

We report on the study of single-mode fiber-laser-pumped mode-locked Yb:CALYO lasers via using a passive saturable absorber and Kerr-lens mode-locking technique, respectively. Up to 3.1-W average power with 103-fs pulse duration is obtained from the passive mode-locking, and down to 36-fs pulse duration with more than 2-W average power is achieved by the pure Kerr-lens mode-locking, which is to the best of our knowledge, the highest average power from a reported sub-40-fs Yb-based solid-state oscillator.

Kerr lens mode-locking of a high-average-power thin-disk ring oscillator

CLEO: 2013 ◽  
2013 ◽  
Author(s):  
A. Amani Eilanlou ◽  
Yasuo Nabekawa ◽  
Makoto Kuwata-Gonokami ◽  
Katsumi Midorikawa
Keyword(s):  
Average Power ◽  
Mode Locking ◽  
Thin Disk ◽  
Ring Oscillator ◽  
High Average Power

scholarly journals Efficient 1 µm Laser Emission of Czochralski-Grown Nd:LGSB Single Crystal

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2005 ◽  
Author(s):  
Catalina-Alice Brandus ◽  
Stefania Hau ◽  
Alin Broasca ◽  
Madalin Greculeasa ◽  
Flavius-Marian Voicu ◽  
...  
Keyword(s):  
Pump Power ◽  
Output Power ◽  
Laser Emission ◽  
Continuous Wave ◽  
Average Power ◽  
Ultrashort Pulses ◽  
Mode Locking ◽  
Average Output ◽  
Continuous Wave Output Power ◽  
Optical Efficiency

A 5.0-at.% Nd-doped La0.64Gd0.41Sc2.95(BO3)4 (Nd:LGSB) borate laser crystal was successfully grown by the Czochralski method, for the first time to our knowledge. The spectroscopic properties of the grown crystal are discussed and 1 µm laser emission, under end-pumping with a fiber-coupled diode laser at 807 nm, is reported. A c-cut Nd:LGSB medium yielded 1.35 W continuous-wave output power at 0.63 overall optical-to-optical efficiency, with respect to the absorbed pump power, together with the high 0.68 slope efficiency. With an a-cut Nd:LGSB sample, 0.81 W output power at 0.52 optical-to-optical efficiency was obtained. The laser emission performances under quasi-continuous wave pumping are presented as well, for both c-cut and a-cut crystals. Passive Q-switching was investigated with a semiconductor saturable absorber mirror (SESAM). Laser pulses with 2.2 µJ energy and 32.8 ns durations were recorded from a-cut Nd:LGSB. The average output power reached 0.36 W at 1.55 W absorbed pump power. Passive mode-locking with SESAM was achieved in a long Z-type resonator. Ultrashort pulses with 0.19 W average power, 1.63 nJ energy, and 1.43 ps pulse duration, at 118 MHz repetition rate, are demonstrated for the a-cut Nd:LGSB medium.

Narrow-bandwidth high-power output of a laser diode array with a simple external cavity

2003 ◽  
Vol 218 (1-3) ◽  
pp. 135-139 ◽  
Author(s):  
Feng Wang ◽  
Andreas Hermerschmidt ◽  
Hans Joachim Eichler
Keyword(s):  
Laser Diode ◽  
High Power ◽  
Power Output ◽  
External Cavity ◽  
Diode Array ◽  
Laser Diode Array ◽  
Narrow Bandwidth ◽  
High Power Output

Intracavity polarization control in mode-locked Er-doped fibre lasers using liquid crystals

2014 ◽  
Vol 22 (2) ◽  
Author(s):  
M. Nikodem ◽  
K. Krzempek ◽  
K. Zygadlo ◽  
G. Dudzik ◽  
A. Waz ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Pulse Duration ◽  
Average Power ◽  
Laser Cavity ◽  
Mode Locking ◽  
Fibre Lasers ◽  
Optical Setup ◽  
Polarization Control ◽  
Optical Layout ◽  
Er Doped

AbstractIn this paper we present a novel configuration of an NPR mode-locked Er-doped laser. This new optical setup uses voltage controlled LC cells to replace standard retarders (quarter-and half-waveplates) inside the laser cavity. Using this novel, mechanical-adjustment-free setup a mode-locking was obtained with sub-500 fs pulse duration and an average power exceeding 40 mW. Presented results show that using simple LC cells, an optical layout of an NPR mode-locked laser can be greatly simplified.

scholarly journals Modeling and Analysis of High-Power Ti:sapphire Laser Amplifiers–A Review

2019 ◽  
Vol 9 (12) ◽  
pp. 2396 ◽  
Author(s):  
Jihoon Jeong ◽  
Seryeyohan Cho ◽  
Seungjin Hwang ◽  
Bongju Lee ◽  
Tae Jun Yu
Keyword(s):  
High Power ◽  
Average Power ◽  
Gain Medium ◽  
Phase Distortion ◽  
High Average Power ◽  
Modeling And Analysis ◽  
Laser Amplifiers ◽  
Ti:Sapphire Laser ◽  
Power Amplification ◽  
Distortion Effect

We have introduced several factors that can be useful for the modeling and analysis of high-power Ti:sapphire laser amplifiers. The amplification model includes the phase distortion effect caused by the atomic phase shift (APS) in gain medium and the thermal-induced phase distortion effect caused by the high-average-power amplification. We have provided an accurate amplification model for the development of ultra-high-intensity and high-average-power lasers.

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