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RSS1994 Vol. 18, No. 1
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1994, 18(1): 1-4.
[Abstract]
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Abstract:
new experimental device of three unequal energy density Q-medulation ruby laser sheets source.With the device,the photography of scattering light of small particle field can be taken.The scattering angle is 90 degree.By using the photography,the information of the small particle field can obtained,such as particle distribution,speed,acceleration and their moving directions.
new experimental device of three unequal energy density Q-medulation ruby laser sheets source.With the device,the photography of scattering light of small particle field can be taken.The scattering angle is 90 degree.By using the photography,the information of the small particle field can obtained,such as particle distribution,speed,acceleration and their moving directions.
1994, 18(1): 5-8.
Abstract:
The stereoscopic interference pattern of Nd3+:LMA crystal is measured with interference pattern actomatic analysis system and the waveform distortion is analysed.We found some impurity in Nd3+:LMA crystal with scanning electron probe.The thermal focus of Nd3+:LMA is measured and compared with Nd3+:YAG.The CW and pulse laser properties of Nd3+:LMA crystal are studied.
The stereoscopic interference pattern of Nd3+:LMA crystal is measured with interference pattern actomatic analysis system and the waveform distortion is analysed.We found some impurity in Nd3+:LMA crystal with scanning electron probe.The thermal focus of Nd3+:LMA is measured and compared with Nd3+:YAG.The CW and pulse laser properties of Nd3+:LMA crystal are studied.
1994, 18(1): 9-11.
Abstract:
In this paper,the influence of CeO2 on corrosion resistance of B laser-alloyed layer is studied by using electrochemical measurements and SEM metallographic observation.The results show that adding CeO2 can significantly improve the corrosion resistance of B laser-alloyed layer.
In this paper,the influence of CeO2 on corrosion resistance of B laser-alloyed layer is studied by using electrochemical measurements and SEM metallographic observation.The results show that adding CeO2 can significantly improve the corrosion resistance of B laser-alloyed layer.
1994, 18(1): 12-16.
Abstract:
By setting up a suitable active mode-locked mode,the evolution process of a instantaneous pulse is simulated with a numerical calculation method.The simula-tion results show that the primary radiation come to a stable mode-lock state only after 1～1.5ms reflections(about 1 ms).With a simple method,the evolution time of a mode-locked pulse measured experimentally.This experimental result is consistent with theory calculation basically.
By setting up a suitable active mode-locked mode,the evolution process of a instantaneous pulse is simulated with a numerical calculation method.The simula-tion results show that the primary radiation come to a stable mode-lock state only after 1～1.5ms reflections(about 1 ms).With a simple method,the evolution time of a mode-locked pulse measured experimentally.This experimental result is consistent with theory calculation basically.
1994, 18(1): 17-22.
Abstract:
Based on the matrix optics,the propagation and transformation characteristics of Gaussian beam through a parabolic gradient-index rod with the spherical end surfaces are analyzed.
Based on the matrix optics,the propagation and transformation characteristics of Gaussian beam through a parabolic gradient-index rod with the spherical end surfaces are analyzed.
1994, 18(1): 23-27.
Abstract:
This paper introduces attenuated total reflection(ATR)method to study electrolysis of Cu in CuSO4 solution.By using the method,the influences of the distance and the voltage between electrodes,and the solution concentration on the electrolysis are studied.The thickness and complex dielectric constants of deposited copper film on electrode are calculated.It's easy to realize real-time and on-site measurement.
This paper introduces attenuated total reflection(ATR)method to study electrolysis of Cu in CuSO4 solution.By using the method,the influences of the distance and the voltage between electrodes,and the solution concentration on the electrolysis are studied.The thickness and complex dielectric constants of deposited copper film on electrode are calculated.It's easy to realize real-time and on-site measurement.
1994, 18(1): 28-30.
Abstract:
In this paper,based on the theoretical analysis two new problems,existing in phase conjugation cavity,are pointed.The first problem is that both spherical wave and Gaussian beam in the resonator with a spherical mirror and a phase conjugation mirror are eigenmode of cavity.The second problem is spherical wave and Gaussian beam in a resonator with a Gaussian reflectance mirror and a phase conjugation mirror are not self-consistent.
In this paper,based on the theoretical analysis two new problems,existing in phase conjugation cavity,are pointed.The first problem is that both spherical wave and Gaussian beam in the resonator with a spherical mirror and a phase conjugation mirror are eigenmode of cavity.The second problem is spherical wave and Gaussian beam in a resonator with a Gaussian reflectance mirror and a phase conjugation mirror are not self-consistent.
1994, 18(1): 31-33.
Abstract:
A general optimization scheme for designing a radiation focusator,which consumes shorter computer time and has the ability to find escape from local extremes,is given.Its speciality is to control different kinds of variables with different algorithms.
A general optimization scheme for designing a radiation focusator,which consumes shorter computer time and has the ability to find escape from local extremes,is given.Its speciality is to control different kinds of variables with different algorithms.
1994, 18(1): 34-37.
Abstract:
Based on the lidar measurements of horizontal atmosphere attenuation,aerosol size distribution and refractive index at boundary layer,using least-square method,we obtain the lidar instrument constant,this method is convenient and feasible.
Based on the lidar measurements of horizontal atmosphere attenuation,aerosol size distribution and refractive index at boundary layer,using least-square method,we obtain the lidar instrument constant,this method is convenient and feasible.
1994, 18(1): 38-41.
Abstract:
The laser marking has been rapidly developed because of its clarity and long life of the laser brand.Marking quality depends on the optical parameters of the system.This paper discusses the relation among the system parameters,such as energy density,image length,body distance,etc.The experimental results of the energy density thresholds of some materials are listed.Those results are useful for designing the optical system of laser marking system.
The laser marking has been rapidly developed because of its clarity and long life of the laser brand.Marking quality depends on the optical parameters of the system.This paper discusses the relation among the system parameters,such as energy density,image length,body distance,etc.The experimental results of the energy density thresholds of some materials are listed.Those results are useful for designing the optical system of laser marking system.
1994, 18(1): 42-45.
Abstract:
The experiment results of the temperature dependence of the gain coefficient and response time in two-beam coupling in BaTiO3 crystal at 830nm are analyzed theoretically by using the one-carrier and One-level band-conduction model.The experimental phenomena could be explained semiquantitatively by using the theory after the temperature dependence of quantum efficiency is considered.
The experiment results of the temperature dependence of the gain coefficient and response time in two-beam coupling in BaTiO3 crystal at 830nm are analyzed theoretically by using the one-carrier and One-level band-conduction model.The experimental phenomena could be explained semiquantitatively by using the theory after the temperature dependence of quantum efficiency is considered.
1994, 18(1): 46-49.
Abstract:
A useful method making,rainbow hologram by means of photoconductive thermoplastic holography is described and the key technical problems in recording process are discussed in detail.
A useful method making,rainbow hologram by means of photoconductive thermoplastic holography is described and the key technical problems in recording process are discussed in detail.
1994, 18(1): 50-54.
Abstract:
The principles of plasma ion-assisted deposition(IAD)and a new high vacuum plasma sotirce are introduced.With a hollow cold cathode discharge,the plasma sotirce can be operated in ambient pressure from 1×10-3pa to 1×10-1pa,the reactive gas and the nonreactive gas can be used as working gas.The energy of Ar- in argon plasma,h1eatstired with a Longmuir probe,is 50～80eV,depending on pressure and discharge current density.It has been experimentally confirmed that both the optical properties and mechanical properties of single-layer films of ZnS and SiO2 prepared in argon plasma and oxygen plasma have been improved considerably as compared to those films obtained with traditional vapor deposition.
The principles of plasma ion-assisted deposition(IAD)and a new high vacuum plasma sotirce are introduced.With a hollow cold cathode discharge,the plasma sotirce can be operated in ambient pressure from 1×10-3pa to 1×10-1pa,the reactive gas and the nonreactive gas can be used as working gas.The energy of Ar- in argon plasma,h1eatstired with a Longmuir probe,is 50～80eV,depending on pressure and discharge current density.It has been experimentally confirmed that both the optical properties and mechanical properties of single-layer films of ZnS and SiO2 prepared in argon plasma and oxygen plasma have been improved considerably as compared to those films obtained with traditional vapor deposition.
1994, 18(1): 55-56.
Abstract:
This paper presents the way to clean the laser system with the filtered high pressure air,and give the way how to make the cleaner.
This paper presents the way to clean the laser system with the filtered high pressure air,and give the way how to make the cleaner.
1994, 18(1): 57-60.
Abstract:
In this paper,the technological experiments of the YAG laser seal carving machine are reported.The mechanism of laser interaction with permeable seal materials is studied and the effects of the laser output energy.Pulse frenquency,carving sped are also investigated.
In this paper,the technological experiments of the YAG laser seal carving machine are reported.The mechanism of laser interaction with permeable seal materials is studied and the effects of the laser output energy.Pulse frenquency,carving sped are also investigated.
1994, 18(1): 61-64.
Abstract:
A new double Fabry-Perot interferometer system with optical fibre for measuring micro-displacement and experiment study about its sensitivity threshold has been introduced in this paper.This system has the characteristics of high accuracy,interference-free compensation due to parallel double-channel configuration.Meanwhile the system may be suitable for accurate measurement of micro-displacement,such as calibration of displacement sensors,location in geometrical metrology,and for measurement of topography of fine manufactured surfaces and other physical quantities which could be transferred into displacement or optical path difference.
A new double Fabry-Perot interferometer system with optical fibre for measuring micro-displacement and experiment study about its sensitivity threshold has been introduced in this paper.This system has the characteristics of high accuracy,interference-free compensation due to parallel double-channel configuration.Meanwhile the system may be suitable for accurate measurement of micro-displacement,such as calibration of displacement sensors,location in geometrical metrology,and for measurement of topography of fine manufactured surfaces and other physical quantities which could be transferred into displacement or optical path difference.
