scholarly journals 100-J Level Green Laser Beam Homogenization to a Pump Petawatt Class Ti:sapphire Chirped-Pulse Amplifi cation Laser System

2009 ◽  
Vol 37 (6) ◽  
pp. 467-469 ◽  
Author(s):  
Hiromitsu KIRIYAMA ◽  
Momoko TANAKA ◽  
Yoshihiro OCHI ◽  
Yoshiki NAKAI ◽  
Hajime SASAO ◽  
...  
Keyword(s):  
Laser Beam ◽  
Laser System ◽  
Green Laser ◽  
Chirped Pulse

Video-Rate Scanning Two-Photon Excitation Fluorescence Microscopy

1998 ◽  
Vol 4 (S2) ◽  
pp. 424-425
Author(s):  
G.Y. Fan ◽  
H. Fujisaki ◽  
R.-K. Tsay ◽  
R.Y. Tsien ◽  
Mark H. Ellisman
Keyword(s):  
Laser Beam ◽  
Group Velocity Dispersion ◽  
Laser System ◽  
Average Power ◽  
Laser Pulses ◽  
Green Laser ◽  
Two Photon ◽  
Photon Excitation ◽  
Schematic Layout ◽  
Two Photon Excitation

A video-rate scanning two-photon excitation microscope (TPEM) has been successfully constructed and tested. The TPEM, based on a Nikon RCM-8000, incorporates a femtosecond pulsed laser, a pre-chirper, and a non-confocal detection box for ratio imaging. Fig. 1 shows the schematic layout of the main components of the instrument, each of which is briefly discussed below.Laser System: A Tsunami Ti: Sapphire laser (from Spectra-Physics) is optically pumped by a 5 W green laser (Millennia from Spectra-Physics) and is capable of generating 100 fs pulses at a repetition rate of 82 MHz and an average power of 0.8 W. The output wavelength is tunable from 690 to 1050 nm with three optical sets, each covering part of the spectrum with some overlapping.Pre-chirper: After leaving the Tsunami, the laser beam enters an optic unit known as a pre-chirper which pre-chirps laser pulses to compensate for the group velocity dispersion which will result when the laser beam goes through the microscope optics.

scholarly journals 1178 J, 527 nm near diffraction limited laser based on a complete closed-loop adaptive optics controlled off-axis multi-pass amplification laser system

2021 ◽  
Vol 9 ◽  
Author(s):  
Deen Wang ◽  
Xin Zhang ◽  
Wanjun Dai ◽  
Ying Yang ◽  
Xuewei Deng ◽  
...  
Keyword(s):  
Laser Beam ◽  
Adaptive Optics ◽  
Closed Loop ◽  
Focal Spot ◽  
Beam Quality ◽  
Laser System ◽  
Diffraction Limit ◽  
Kdp Crystal ◽  
Main Amplifier

Abstract A 1178 J near diffraction limited 527 nm laser is realized in a complete closed-loop adaptive optics (AO) controlled off-axis multi-pass amplification laser system. Generated from a fiber laser and amplified by the pre-amplifier and the main amplifier, a 1053 nm laser beam with the energy of 1900 J is obtained and converted into a 527 nm laser beam by a KDP crystal with 62% conversion efficiency, 1178 J and beam quality of 7.93 times the diffraction limit (DL). By using a complete closed-loop AO configuration, the static and dynamic wavefront distortions of the laser system are measured and compensated. After correction, the diameter of the circle enclosing 80% energy is improved remarkably from 7.93DL to 1.29DL. The focal spot is highly concentrated and the 1178 J, 527 nm near diffraction limited laser is achieved.

Demonstration of a diode pumped Nd,Y co-doped SrF 2 crystal based, high energy chirped pulse amplification laser system

2017 ◽  
Vol 382 ◽  
pp. 201-204 ◽  
Author(s):  
Junchi Chen ◽  
Yujie Peng ◽  
Zongxin Zhang ◽  
Hongpeng Su ◽  
Yuxin Leng ◽  
...  
Keyword(s):  
Laser System ◽  
High Energy ◽  
Chirped Pulse ◽  
Pulse Amplification ◽  
Chirped Pulse Amplification ◽  
Diode Pumped ◽  
Co Doped

HIGH TEMPERATURE PROPERTIES OF MINIATURIZED THICK-FILM COMPONENTS

2012 ◽  
Vol 2012 (CICMT) ◽  
pp. 000400-000405
Author(s):  
Damian Nowak ◽  
Andrzej Dziedzic ◽  
Tomasz Piasecki ◽  
Tomasz Baraniecki ◽  
Jacek Reiner
Keyword(s):  
High Temperature ◽  
Laser Beam ◽  
Thick Film ◽  
Nd:Yag Laser ◽  
Laser Cutting ◽  
Laser System ◽  
Frequency Range ◽  
High Temperature Properties ◽  
Conductive Path ◽  
Conductive Films

This paper presents systematic studies of thick-film or LTCC microcomponents (capacitors, inductors) made with the aid of laser-shaping and operating at temperature up to 450 °C. The minimum dimensions i.e. conductive path width and spacings were about 30 μm. Such small patterns have been created by laser cutting of fired Au- or Ag-based conductive films. Laser system equipped with Nd:YAG-laser (beam wavelength of 1064 nm) was applied. The inductance, capacitance, as well as parasitic impedances were measured in the frequency range from 10 kHz to 110 MHz and temperature between 25 °C and 450 °C.

scholarly journals A Yb:KGW dual-crystal regenerative amplifier

2020 ◽  
Vol 8 ◽  
Author(s):  
Huijun He ◽  
Jun Yu ◽  
Wentao Zhu ◽  
Xiaoyang Guo ◽  
Cangtao Zhou ◽  
...  
Keyword(s):  
Laser System ◽  
Regenerative Amplifier ◽  
Chirped Pulse ◽  
Pulse Amplification ◽  
Front End ◽  
Chirped Pulse Amplification ◽  
Gain Narrowing ◽  
Diode Pumped ◽  
Cavity Design ◽  
Output Laser

Abstract This study develops a Yb:KGW dual-crystal based regenerative amplifier. The thermal lensing and gain-narrowing effects are compensated by the dual-crystal configuration. Sub-nanojoule pulses are amplified to 1.5 mJ with 9 nm spectral bandwidth and 1 kHz repetition rate using chirped pulse amplification technology. Consequently, 1.2 mJ pulses with a pulse duration of 227 fs are obtained after compression. Thanks to the cavity design, the output laser was a near diffraction limited beam with M2 around 1.1. The amplifier has the potential to boost energy above 2 mJ after compression and act as a front end for a future kilohertz terawatt-class diode-pumped Yb:KGW laser system.

Compact 0.56 Petawatt laser system based on optical parametric chirped pulse amplification in KD*P crystals

2007 ◽  
Vol 4 (6) ◽  
pp. 421-427 ◽  
Author(s):  
V V Lozhkarev ◽  
G I Freidman ◽  
V N Ginzburg ◽  
E V Katin ◽  
E A Khazanov ◽  
...  
Keyword(s):  
Laser System ◽  
Chirped Pulse ◽  
Pulse Amplification ◽  
Optical Parametric ◽  
Chirped Pulse Amplification
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