Ultrafast laser source for nonlinear imaging and spectroscopy with high energy sub-100 fs pulses

2021 ◽  
Author(s):  
Mohammad Anisur Rahman Reza ◽  
Arkady Major
Keyword(s):  
High Energy ◽  
Ultrafast Laser ◽  
Laser Source ◽  
Imaging And Spectroscopy ◽  
Nonlinear Imaging

scholarly journals Fiber-based ultrashort pulse delivery for nonlinear imaging using high-energy solitons

2014 ◽  
Vol 19 (8) ◽  
pp. 086021 ◽  
Author(s):  
Sarah Saint-Jalm ◽  
Esben R. Andresen ◽  
Patrick Ferrand ◽  
Abdelkrim Bendahmane ◽  
Arnaud Mussot ◽  
...  
Keyword(s):  
Ultrashort Pulse ◽  
High Energy ◽  
Nonlinear Imaging

scholarly journals Direct Amplification of High Energy Pulsed Laser in Fiber-Single Crystal Fiber with High Average Power

Crystals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 216
Author(s):  
Feng Li ◽  
Zhi Yang ◽  
Zhiguo Lv ◽  
Yang Yang ◽  
Yishan Wang ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Single Crystal ◽  
Stimulated Raman Scattering ◽  
Average Power ◽  
High Energy ◽  
Laser Source ◽  
High Average Power ◽  
Double Pass ◽  
Two Stage ◽  
Crystal Fiber

A laser master oscillator power amplifier (MOPA) system consisting of a fiber amplifier and a two-stage Yb:YAG single crystal fiber (SCF) is experimentally studied. The nonlinear stimulated Raman scattering (SRS) is avoided by limiting the output power of the fiber preamplifier to 600 mW. Due to the benefit from the low nonlinearity and high amplification gain of the SCF, a laser pulse duration of 16.95 ps and a high average power of 41.7 W at a repetition rate of 250 kHz are obtained by using a two-stage polarization controlled double-pass amplification of Yb:YAG SCF, corresponding to an output energy of 166.8 μJ and a peak power of 9.84 MW, respectively. The polarization controlled SCF amplification scheme achieved a gain as high as more than 69 times. During the amplification, the spectra gain narrowing effect and the polarization controlled four-pass amplification setup are also studied. The laser spectrum is narrowed from over 10 nm to less than 3 nm, and the pulse width is also compressed to hundreds of femtosecond by dechirping the laser pulse. This compact-sized, cost-effective laser source can be used in laser micromachining, or as the seeder source for generating much higher power and energy laser for scientific research. For some applications which need femtosecond laser, this laser source can also be compressed to femtosecond regime.

scholarly journals Assessment of Model Confidence of a Laser Source Model in xRAGE Using Omega Direct-Drive Implosion Experiments

2018 ◽  
Vol 3 (4) ◽  
Author(s):  
Brandon M. Wilson ◽  
Aaron Koskelo
Keyword(s):  
Energy Density ◽  
National Laboratory ◽  
High Energy ◽  
Source Model ◽  
High Energy Density ◽  
Laser Source ◽  
Direct Drive ◽  
High Energy Density Physics ◽  
Model Confidence ◽  
Omega Laser

Los Alamos National Laboratory is interested in developing high-energy-density physics validation capabilities for its multiphysics code xRAGE. xRAGE was recently updated with the laser package Mazinisin to improve predictability. We assess the current implementation and coupling of the laser package via validation of laser-driven, direct-drive spherical capsule experiments from the Omega laser facility. The ASME V&V 20-2009 standard is used to determine the model confidence of xRAGE, and considerations for high-energy-density physics are identified. With current modeling capabilities in xRAGE, the model confidence is overwhelmed by significant systematic errors from the experiment or model. Validation evidence suggests cross-beam energy transfer as a dominant source of the systematic error.

scholarly journals Application of laser remote sensing technology and super continuous spectrum laser

2020 ◽  
Vol 165 ◽  
pp. 03002
Author(s):  
Li Jing ◽  
Che Ying ◽  
Jin Meishan ◽  
Zhai Yannan ◽  
Ding Changhong
Keyword(s):  
Remote Sensing ◽  
Continuous Spectrum ◽  
Oil Spill ◽  
Three Dimensional ◽  
High Energy ◽  
High Energy Density ◽  
Laser Radar ◽  
Laser Source ◽  
Spectral Information ◽  
Distant Target

Fiber optic super continuous spectrum laser technology is a new technology developed in recent years. It takes into account the advantages of good alignment of laser source, high energy density and wide wavelength range of ordinary white light source, which can not only accurately remote sense distant target, but also obtain hyperspectral information of distant target. Super continuous spectrum of laser radar is a kind of remote sensing monitoring instrument, it can obtain three-dimensional spectral information of the target, and can be accurately detected in the night of distant high spectral information, the all-weather, three-dimensional spectrum detection method with the traditional passive remote sensing compared with single/multiband laser radar technology has incomparable advantages. Based on the development trend of lidar abroad, the development status of super-continuous spectrum lidar in China and the problems in remote sensing detection of oil spill, this paper introduces the feasibility of using super-continuous spectrum laser to monitor oil spill in the sea, which lays a foundation for further research.

scholarly journals Micromachining of Invar with 784 Beams Using 1.3 ps Laser Source at 515 nm

Materials ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 2962 ◽  
Author(s):  
Petr Hauschwitz ◽  
Bohumil Stoklasa ◽  
Jiří Kuchařík ◽  
Hana Turčičová ◽  
Michael Písařík ◽  
...  
Keyword(s):  
Coefficient Of Thermal Expansion ◽  
Light Emitting Diode ◽  
Laser System ◽  
Ultrashort Pulses ◽  
High Energy ◽  
Laser Source ◽  
Organic Light Emitting Diode ◽  
Energy Pulse ◽  
Cost Efficient ◽  
Monitoring Module

To fulfil the requirements for high-resolution organic light-emitting diode (OLED) displays, precise and high-quality micrometer-scale patterns have to be fabricated inside metal shadow masks. Invar has been selected for this application due to its unique properties, especially a low coefficient of thermal expansion. In this study, a novel cost-efficient method of multi-beam micromachining of invar will be introduced. The combination of a Meopta beam splitting, focusing and monitoring module with a galvanometer scanner and HiLASE high-energy pulse laser system emitting ultrashort pulses at 515 nm allows drilling and cutting of invar foil with 784 beams at once with high precision and almost no thermal effects and heat-affected zone, thus significantly improving the throughput and efficiency.

Tunable mid-infrared, high-energy femtosecond laser source for glyco-prtein structure analysis

2006 ◽  
Author(s):  
Tomohiro Imahoko ◽  
Zhigang Zhang ◽  
Tetuo Ando ◽  
Koji Yoshida ◽  
Norihiro Inoue ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Structure Analysis ◽  
High Energy ◽  
Laser Source ◽  
Mid Infrared

scholarly journals High energy, single-mode, narrow-linewidth fiber laser source using stimulated Brillouin scattering beam cleanup

2007 ◽  
Vol 15 (10) ◽  
pp. 6464 ◽  
Author(s):  
B. Steinhausser ◽  
A. Brignon ◽  
E. Lallier ◽  
J. P. Huignard ◽  
P. Georges
Keyword(s):  
Fiber Laser ◽  
Brillouin Scattering ◽  
Stimulated Brillouin Scattering ◽  
Single Mode ◽  
High Energy ◽  
Laser Source ◽  
Narrow Linewidth ◽  
Stimulated Brillouin

A PHASE CONJUGATE Nd:YAG LASER WITH BEAM STEERING

1993 ◽  
Vol 02 (02) ◽  
pp. 229-245 ◽  
Author(s):  
F. DIZIER ◽  
J.-L. AYRAL ◽  
J. MONTEL ◽  
J.-P. HUIGNARD
Keyword(s):  
Nd:Yag Laser ◽  
Beam Steering ◽  
High Energy ◽  
Laser Source ◽  
Access Time ◽  
Nitrogen Gas ◽  
Phase Conjugate ◽  
Competitive Effects ◽  
Energy Beam ◽  
The Stability

We analyse the competitive effects which alter the stability of SBS phase conjugate mirrors when the laser operates at repetition rates between 10 and 30 Hz. Satisfactory results are obtained with nitrogen gas cell at 180 Atm. We also propose and experimentally demonstrate a SBS phase-conjugate Nd:YAG laser source with a beam steering function. The laser, designed as an oscillator-amplifier configuration, incorporates a TeO 2 acousto-optic deflector on the low energy beam. The high energy beam (100–185 mJ) is thus deflected over 2.7° and 40 resolved beam directions are obtained with 5 µs access time.

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