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Femtosecond CPA hybrid laser system with pulse-on-demand operation
ID
Černe, Luka
(
Author
),
ID
Petelin, Jaka
(
Author
),
ID
Petkovšek, Rok
(
Author
)
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https://www.osapublishing.org/oe/abstract.cfm?uri=oe-28-6-7875
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Abstract
In this manuscript we present a true pulse-on-demand concept of a hybrid CPA laser system, consisting of a chirped-pulse fiber amplifier and an additional solid-state amplifier, capable of generating femtosecond pulses on demand without an external optical modulator/shutter. Pulse-on-demand operation is achieved by introducing idler pulses with a few nanoseconds duration and selectively switching between the femtosecond and idler pulses. The idler pulses are used to maintain a constant population inversion in the fiber amplifier as well as in the solid-state amplifier. Second harmonic generation (SHG) unit then effectively filters out the idler pulses due to their low peak power, leaving only a stable femtosecond pulse train. This concept is demonstrated on a CPA hybrid system that can generate pulses with up to 200 [mikro] J at 515 nm with a pulse duration under 450 fs. As there is no optical modulator at the laser output, the presented concept also enables further power scaling.
Language:
English
Keywords:
fiber lasers
,
pulse on demand
,
hybrid lasers
,
ultrashort pulses
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
Publication status:
Published
Publication version:
Version of Record
Year:
2020
Number of pages:
Str. 7875-7888
Numbering:
Vol. 28, no. 6, art. 386769
PID:
20.500.12556/RUL-126438
UDC:
681.7.069.24(045)
ISSN on article:
1094-4087
DOI:
10.1364/OE.386769
COBISS.SI-ID:
17063707
Copyright:
V članku navedeno: "© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement";
https://www.osapublishing.org/library/license_v1.cfm
(22. 4. 2021).
Publication date in RUL:
22.04.2021
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1243
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397
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Record is a part of a journal
Title:
Optics express
Shortened title:
Opt. express
Publisher:
Optical Society of America
ISSN:
1094-4087
COBISS.SI-ID:
8636438
Secondary language
Language:
Slovenian
Keywords:
vlakenski laserji
,
bliski na zahtevo
,
hibridni laserji
,
ultrakratki bliski
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
L2-8183
Name:
VISOKO PRILAGODLJIVI VLAKENSKI LASERJI VELIKIH MOČI ZA UPORABO V INDUSTRIJI
Funder:
ARRS - Slovenian Research Agency
Project number:
L2-9240
Name:
Ultrakratki laserski pulzi na zahtevo
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0270
Name:
Proizvodni sistemi, laserske tehnologije in spajanje materialov
Funder:
EC - European Commission
Name:
Building blocks, tools and systems for factories of future
Acronym:
GOSTOP
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