scholarly journals Order-of-magnitude laser imprint reduction using pre-expanded high-Z coatings on targets driven by a third harmonic Nd:glass laser

2021 ◽  
Vol 28 (3) ◽  
pp. 032710
Author(s):  
Max Karasik ◽  
Jaechul Oh ◽  
S. P. Obenschain ◽  
A. J. Schmitt ◽  
Y. Aglitskiy ◽  
...  
Keyword(s):  
Third Harmonic ◽  
Order Of Magnitude ◽  
Nd:Glass Laser

scholarly journals Enhanced harmonic generation by propagation of two-color p-polarized laser beams in plasma

2017 ◽  
Vol 35 (1) ◽  
pp. 182-189 ◽  
Author(s):  
E. Agrawal ◽  
N.K. Verma ◽  
P. Jha
Keyword(s):  
Plasma Density ◽  
Normal Incidence ◽  
Laser Beams ◽  
Angle Of Incidence ◽  
Arbitrary Integer ◽  
Third Harmonic ◽  
Harmonic Radiation ◽  
Fundamental Frequencies ◽  
Order Of Magnitude ◽  
Spatially Varying

AbstractA theoretical model is developed for studying the generation of third-harmonic radiation by the interaction of obliquely incident, two-color p-polarized laser beams with spatially varying plasma density. The ratio of the fundamental frequencies of the two laser beams are considered to be an arbitrary integer. The amplitude of harmonic radiation obtained by oblique incidence of two-color laser fields propagating in homogeneous plasma is enhanced in comparison with that obtained by normal incidence of two-color laser beams. The periodicity of the plasma density allows the harmonic radiation to be phase-matched, leading to further increase in the amplitude of phase-matched harmonic radiation by an order of magnitude. The amplitude of the generated harmonic radiation increases with the increase in angle of incidence.

Suppression of FM-to-AM Conversion in Broadband Third-Harmonic Generation of Nd:Glass Laser

2011 ◽  
Vol 28 (4) ◽  
pp. 044209 ◽  
Author(s):  
Ying Chen ◽  
Lie-Jia Qian ◽  
He-Yuan Zhu ◽  
Dian-Yuan Fan
Keyword(s):  
Harmonic Generation ◽  
Third Harmonic Generation ◽  
Third Harmonic ◽  
Nd:Glass Laser

scholarly journals Modeling of large-aperture third-harmonic frequency conversion of high-power Nd:glass laser systems

1991 ◽  
Author(s):  
Mark A. Henesian ◽  
Paul J. Wegner ◽  
David R. Speck ◽  
Camille M. Bibeau ◽  
Robert B. Ehrlich ◽  
...  
Keyword(s):  
High Power ◽  
Frequency Conversion ◽  
Harmonic Frequency ◽  
Third Harmonic ◽  
Large Aperture ◽  
Laser Systems ◽  
Nd:Glass Laser

Third harmonic generation of Nd:glass laser with novel composite deuterated KDP crystals

Laser Physics ◽  
2010 ◽  
Vol 20 (10) ◽  
pp. 1923-1926 ◽  
Author(s):  
W. Wang ◽  
J. Wang ◽  
F. Wang ◽  
B. Feng ◽  
K. Li ◽  
...  
Keyword(s):  
Harmonic Generation ◽  
Third Harmonic Generation ◽  
Third Harmonic ◽  
Kdp Crystals ◽  
Nd:Glass Laser

Nonlinear magneto-optics of nanogranular films

2004 ◽  
Vol 834 ◽  
Author(s):  
Evgenia M. Kim ◽  
Tatyana V Murzina ◽  
Oleg A Aktsipetrov ◽  
Anatolii F. Kravets
Keyword(s):  
Kerr Effect ◽  
Polarization State ◽  
Experimental Studies ◽  
Optical Kerr Effect ◽  
Third Order ◽  
Third Harmonic ◽  
Optical Effects ◽  
Nonlinear Optical Effects ◽  
Order Of Magnitude ◽  
Magneto Optical Kerr Effect

ABSTRACTIn this paper, the results of experimental studies of magnetization-induced second- and third-order nonlinear optical effects in magnetic nanogranular films are described. Magnetization-induced variations of the intensity, polarization state and the phase of the harmonics' waves are observed in magnetic nanogranular films of the composition CoxAg1-x and Cox(Al2O3)1-x. Nonlinear magneto-optical Kerr effect (NOMOKE) in third-harmonic generation is observed in these nanomaterials. The second- and third-order NOMOKE from granular films is shown to exceed the linear magneto-optical Kerr effect by at least an order of magnitude.

Third-harmonic generation of mode-locked Nd:glass laser pulses in phase-matched Rb-Xe mixtures

1976 ◽  
Vol 14 (6) ◽  
pp. 2240-2257 ◽  
Author(s):  
H. Puell ◽  
K. Spanner ◽  
W. Falkenstein ◽  
W. Kaiser ◽  
C. R. Vidal
Keyword(s):  
Harmonic Generation ◽  
Laser Pulses ◽  
Third Harmonic Generation ◽  
Third Harmonic ◽  
Nd:Glass Laser

Second- and Third-Harmonic Generation of Nd:Glass Laser in Fast Red ITR Organic Crystal Fiber

1988 ◽  
Vol 27 (Part 2, No. 11) ◽  
pp. L2115-L2117 ◽  
Author(s):  
Shinzo Muto ◽  
Osamu Yoda ◽  
Akira Sugiyama ◽  
Akihiko Fukasawa ◽  
Hiroshi Ito
Keyword(s):  
Harmonic Generation ◽  
Third Harmonic Generation ◽  
Organic Crystal ◽  
Third Harmonic ◽  
Crystal Fiber ◽  
Fast Red ◽  
Nd:Glass Laser

A controller for safe, convenient operation of LaB6 emitters on electron-beam instruments

1983 ◽  
Vol 41 ◽  
pp. 408-409
Author(s):  
W. J. Abramson ◽  
H. W. Estry ◽  
L. F. Allard
Keyword(s):  
Electron Beam ◽  
Control System ◽  
Thermal Shock ◽  
Appropriate Care ◽  
Electron Guns ◽  
Tungsten Filaments ◽  
Order Of Magnitude ◽  
Main Components

LaB6 emitters are becoming increasingly popular as direct replacements for tungsten filaments in the electron guns of modern electron-beam instruments. These emitters offer order of magnitude increases in beam brightness, and, with appropriate care in operation, a corresponding increase in source lifetime. They are, however, an order of magnitude more expensive, and may be easily damaged (by improper vacuum conditions and thermal shock) during saturation/desaturation operations. These operations typically require several minutes of an operator's attention, which becomes tedious and subject to error, particularly since the emitter must be cooled during sample exchanges to minimize damage from random vacuum excursions. We have designed a control system for LaBg emitters which relieves the operator of the necessity for manually controlling the emitter power, minimizes the danger of accidental improper operation, and makes the use of these emitters routine on multi-user instruments.Figure 1 is a block schematic of the main components of the control system, and Figure 2 shows the control box.

Novel magneto-optical recording materials: Bi-substituted garnet films

1991 ◽  
Vol 49 ◽  
pp. 776-777
Author(s):  
Takao Suzuki ◽  
Hossein Nuri
Keyword(s):  
Grain Size ◽  
Amorphous Film ◽  
Nitrogen Atmosphere ◽  
Optical Recording ◽  
Garnet Film ◽  
Media Noise ◽  
Garnet Films ◽  
Order Of Magnitude ◽  
A New Technique ◽  
A Current

For future high density magneto-optical recording materials, a Bi-substituted garnet film ((BiDy)3(FeGa)5O12) is an attractive candidate since it has strong magneto-optic effect at short wavelengths less than 600 nm. The signal in read back performance at 500 nm using a garnet film can be an order of magnitude higher than a current rare earth-transition metal amorphous film. However, the granularity and surface roughness of such crystalline garnet films are the key to control for minimizing media noise.We have demonstrated a new technique to fabricate a garnet film which has much smaller grain size and smoother surfaces than those annealed in a conventional oven. This method employs a high ramp-up rate annealing (Γ = 50 ~ 100 C/s) in nitrogen atmosphere. Fig.1 shows a typical microstruture of a Bi-susbtituted garnet film deposited by r.f. sputtering and then subsequently crystallized by a rapid thermal annealing technique at Γ = 50 C/s at 650 °C for 2 min. The structure is a single phase of garnet, and a grain size is about 300A.

Atomic-level imaging of the surface structure of Ag2O

1984 ◽  
Vol 42 ◽  
pp. 656-657
Author(s):  
William Krakow
Keyword(s):  
High Vacuum ◽  
Atomic Level ◽  
Ultra High Vacuum ◽  
Research Groups ◽  
Resolution Electron ◽  
Surface Reconstructions ◽  
Order Of Magnitude ◽  
High Resolution Electron Microscope ◽  
Saturated Structure ◽  
Transmission And Reflection

In recent years electron microscopy has been used to image surfaces in both the transmission and reflection modes by many research groups. Some of this work has been performed under ultra high vacuum conditions (UHV) and apparent surface reconstructions observed. The level of resolution generally has been at least an order of magnitude worse than is necessary to visualize atoms directly and therefore the detailed atomic rearrangements of the surface are not known. The present author has achieved atomic level resolution under normal vacuum conditions of various Au surfaces. Unfortunately these samples were exposed to atmosphere and could not be cleaned in a standard high resolution electron microscope. The result obtained surfaces which were impurity stabilized and reveal the bulk lattice (1x1) type surface structures also encountered by other surface physics techniques under impure or overlayer contaminant conditions. It was therefore decided to study a system where exposure to air was unimportant by using a oxygen saturated structure, Ag2O, and seeking to find surface reconstructions, which will now be described.

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