High‐Frequency Laser Interferometry in Plasma Diagnostics

1965 ◽  
Vol 36 (7) ◽  
pp. 2146-2151 ◽  
Author(s):  
J. B. Gerardo ◽  
J. T. Verdeyen ◽  
M. A. Gusinow
Keyword(s):  
Plasma Diagnostics ◽  
High Frequency ◽  
Laser Interferometry ◽  
Frequency Laser

Lead Extraction with High-Frequency Laser Sheaths: A Single-Center Experience

2016 ◽  
Vol 64 (S 01) ◽  
Author(s):  
M. Linder ◽  
S. Pecha ◽  
S. Zipfel ◽  
L. Castro ◽  
N. Gosau ◽  
...  
Keyword(s):  
High Frequency ◽  
Lead Extraction ◽  
Single Center ◽  
Single Center Experience ◽  
Frequency Laser

scholarly journals Circular Rydberg states of helium atoms or helium-like ions in a high-frequency laser field

Open Physics ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 11-17
Author(s):  
Nikolay Kryukov ◽  
Eugene Oks
Keyword(s):  
High Frequency ◽  
Laser Field ◽  
Nuclear Charge ◽  
Rydberg States ◽  
Orbital Plane ◽  
Precession Frequency ◽  
Nonmonotonic Dependence ◽  
Absolute Value ◽  
Rydberg Electron ◽  
Frequency Laser

Abstract In the literature, there were studies of Rydberg states of hydrogenic atoms/ions in a high-frequency laser field. It was shown that the motion of the Rydberg electron is analogous to the motion of a satellite around an oblate planet (for a linearly polarized laser field) or around a (fictitious) prolate planet (for a circularly polarized laser field): it exhibits two kinds of precession – one of them is the precession within the orbital plane and another one is the precession of the orbital plane. In this study, we study a helium atom or a helium-like ion with one of the two electrons in a Rydberg state, the system being under a high-frequency laser field. For obtaining analytical results, we use the generalized method of the effective potentials. We find two primary effects of the high-frequency laser field on circular Rydberg states. The first effect is the precession of the orbital plane of the Rydberg electron. We calculate analytically the precession frequency and show that it differs from the case of a hydrogenic atom/ion. In the radiation spectrum, this precession would manifest as satellites separated from the spectral line at the Kepler frequency by multiples of the precession frequency. The second effect is a shift of the energy of the Rydberg electron, also calculated analytically. We find that the absolute value of the shift increases monotonically as the unperturbed binding energy of the Rydberg electron increases. We also find that the shift has a nonmonotonic dependence on the nuclear charge Z: as Z increases, the absolute value of the shift first increases, then reaches a maximum, and then decreases. The nonmonotonic dependence of the laser field-caused energy shift on the nuclear charge is a counterintuitive result.

scholarly journals Pulse duration effect on photoelectron spectrum of atom irradiated by strong high frequency laser

2018 ◽  
Vol 67 (7) ◽  
pp. 073202
Author(s):  
Guo Jing ◽  
Guo Fu-Ming ◽  
Chen Ji-Gen ◽  
Yang Yu-Jun
Keyword(s):  
Pulse Duration ◽  
High Frequency ◽  
Photoelectron Spectrum ◽  
Frequency Laser ◽  
Duration Effect

The Analysis and Design of a Large Stroke with High-Precision Polarized Laser Interferometer System

2016 ◽  
Vol 679 ◽  
pp. 129-134
Author(s):  
Wan Duo Wu ◽  
Qiang Xian Huang ◽  
Chao Qun Wang ◽  
Ting Ting Wu ◽  
Hong Xie
Keyword(s):  
High Precision ◽  
Measurement Accuracy ◽  
Laser Interferometer ◽  
Laser Interferometry ◽  
Phase Shifting ◽  
Single Frequency ◽  
Rejection Method ◽  
The Common ◽  
Frequency Laser ◽  
Polarization Phase

The technique utilizing single-frequency laser interferometry has very high measurement accuracy, but it has rigorous requirements for optical design which is affected by many factors. In order to achieve single-frequency laser interferometry with large stroke and high precision, the integral layout, the polarization phase shifting technique and the common mode rejection method are adopted to design the length interferometry system. This paper analyzes factors and design requirements which affect measurement accuracy with large stroke. Based on polarization phase shifting technique, the system employs the four-beam-signal detection technique and the common mode rejection method, to make a differential processing of four mutually orthogonal signals. Thus, the influences of zero-drift of intensity and environmental change on system are reduced. Combined with a 200 phase subdivision, the system achieves the resolution with 0.8 nm. Under the VC++ environment, the displacement measurement results are compensated and corrected according to the environmental parameters. Compared with the Renishaw XL-80 laser interferometer, the system has better stability in short term. In the measuring range of 60 mm, the effectiveness of the system is verified.

Effect of the High-Frequency Laser Radiation on the Nonlinear Optical Properties of n-Type Double δ-Doped GaAs Quantum Wells

2019 ◽  
Vol 19 (7) ◽  
pp. 4167-4171
Author(s):  
Fatih Ungan ◽  
Huseyin Sari ◽  
Esin Kasapoglu ◽  
Unal Yesilgul ◽  
Serpil Sakiroglu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Laser Radiation ◽  
Quantum Wells ◽  
High Frequency ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Frequency Laser

Dichotomy of the Hydrogen Atom in Superintense, High-Frequency Laser Fields

1988 ◽  
Vol 61 (8) ◽  
pp. 939-942 ◽  
Author(s):  
M. Pont ◽  
N. R. Walet ◽  
M. Gavrila ◽  
C. W. McCurdy
Keyword(s):  
Hydrogen Atom ◽  
High Frequency ◽  
Laser Fields ◽  
Frequency Laser
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