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Generation and Transformation of Partially Coherent Laser Beams
Partially coherent beam Tensor ABCD law Spatial-temporal phase modulation
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2009/6/8
The recent progresses in the generation and transformation of partially coherent beams are reviewed. The analytical propagation formulae for the cross-spectral density of the partially coherent anisot...
Laser Beams with Spatio-Temporal Phase Modulation
Coherence control Partially coherent light Speckle smoothing
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2009/6/8
This paper reviews a method of the irradiance profile smoothing on the high-power laser system. In the multi-beam laser irradiation geometry, the coherence control of laser beam is necessary to reduce...
Progress in New Laser Beam on Optical Beam Quality
Optical beam quality Equivalent optical beam quality Intracavity CO2 laser
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2009/6/8
The historical and present research work of our group in laser beam on optical beam quality is reviewed in this paper. An invented intracavity CO2 laser with Me2 < 1 is presented, and the optical beam...
Measurement of Distribution of Blood-flow Change in Exposed Cortex by Laser Speckle Flowgraphy
Laser Speckle Blood flow Imaging
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2009/6/2
The change in the cortical blood flow of guinea pigs during auditory stimulation is measured by laser speckle flowgraphy (LSFG). Accuracy of LSFG depends on the number of the frames for the blood flow...
Optical Properties of Micro-Pulling Down Method Grown Nd3+:(La1-x,Bax)F3-x as Potential Vacuum Ultraviolet Laser Material and Scintillator
Vacuum ultraviolet Fluoride Emission
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2009/6/1
The optical properties of Nd3+:LaF3 and Nd3+:(La1-x,Bax)F3-x (x=0.1) crystals, which were efficiently grown by the micro-pulling down method, were investigated using a vacuum ultraviolet spectrum-reso...
Laser induced damage of multilayer coatings for 248 nm
Laser induced damage Excimer laser Antireflection coating
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2009/6/1
Antireflection coatings (AR), beam splitter coatings (BS) and high-reflectance coatings (HR) were prepared to study the effect of material properties and stack structures on the laser induced damage b...
An Experimental Study on Micro-Bubble Generation by Laser-Induced Breakdown in Water
Micro-Bubble Nano-Bubble Laser-Induced Breakdown
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2009/6/1
This paper reports a detailed experimental investigation of bubbles with various diameters generated by laser-induced breakdown in water, which is an important issue in the field of laser medical care...
High Intensity Laser Propagation though Overdense Plasmas
Inertial fusion energy Fast ignition Laser plasma interaction
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2009/6/1
High intensity laser propagation in plasmas is one of the key issues in fast ignition scheme of laser fusion energy. We have investigated experimentally and computationally the laser propagation in de...
Development of Extreme-Ultraviolet Light Source by Laser-Produced Plasma
Laser produced plasma Extreme Ultraviolet (EUV) Tin opacity
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2009/6/1
Extreme ultraviolet (EUV) radiation from laser-produced plasma has been studied for mass-production of the next generation semiconductor devices with EUV lithography. A full set of experimental databa...
Generation of ENergetic Beam Ultimate（GENBU）Laser - Main Laser -
High Power Laser Cryogenic Laser Material DPSSL Fusion Reactor Driver
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2009/6/1
A new diode-pumped laser fusion driver has been conceptually designed at 16-Hz repetition rate, 17% electrical-optical efficiency and less than 3000-m3 main amplifier size. Output power is 1.2 MJ for ...
Effects of Polarization on a Single-mode Class A Laser
Class A laser Chaos Polarization Lyapunov exponents
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2009/6/1
Effects of the light polarization on a chaotic oscillation dynamics of a single-mode He-Ne(6326Å) class A laser was studied by using optical delayed feedback with an external optical resonator. ...
Direct Ionization Desorption of Fullerene by Intense Femtosecond Laser Fields
C60 Solid Femtosecond Ionization
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2009/6/1
We investigated the direct ionization and desorption of solid C60 by the irradiation of femtosecond nonresonant (neutral and cationic states) pulses at 1.4 µm. We concluded that ion desorption i...
THE IMPACT OF ANGLE PARAMETERISATION ON TERRESTRIAL LASER SCANNER SELF-CALIBRATION
Calibration Error Laser Scanning LIDAR
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2016/2/29
The angular fields of view in which a terrestrial laser scanner captures data differ according to instrument construction. Both the socalled panoramic and hybrid instruments scan through a full horizo...
INVESTIGATING ADJUSTMENT OF AIRBORNE LASER SCANNING STRIPS WITHOUT USAGE OF GNSS/IMU TRAJECTORY DATA
Airborne Laser Scanning adjustment LIDAR georeferencing quality control
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2016/2/29
Airborne laser scanning (ALS) requires GNSS (Global Navigation Satellite System; e.g. GPS) and an IMU (Inertial Measurement
Unit) for determining the dynamically changing orientation of the scanning ...
Effect of a wiggler magnetic field and the ponderomotive force on the second harmonic generation in laser-plasma interactions
Second harmonic generation wiggler magnetic field nonlinear optics phase-matching plasma
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2010/4/8
In this paper, we consider second harmonic generation and its phase-matching in an underdense plasma in the presence of a wiggler magnetic field. Wiggler magnetic field plays both a dynamic role in pr...