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RSS1987 Vol. 11, No. 2
Display Method:
1987, 11(2): 1-6,17.
[Abstract]
[PDF 363KB]
Abstract:
1987, 11(2): 7-11.
Abstract:
In a TEA CO2 laser,the most important influence on the discharge is the dissociation of dioxide carbon.By adding the assistant gases into the laser,the discharge characteristics are improved.In this paper,we have analysed and computed the dissociation rate of CO2 and made the theoretical analyses and experimental researches of the influence of gases CO and H2 on the discharge in detail.
In a TEA CO2 laser,the most important influence on the discharge is the dissociation of dioxide carbon.By adding the assistant gases into the laser,the discharge characteristics are improved.In this paper,we have analysed and computed the dissociation rate of CO2 and made the theoretical analyses and experimental researches of the influence of gases CO and H2 on the discharge in detail.
1987, 11(2): 12-17.
Abstract:
Using the "optical signal itself amplifing method",proposed by authors, the spatial and temporal gain characteristics of Kr Ⅱ 469.5 nm laser oscillation in pulsed hollow cathode discharge (HCD) was measursd by the self laser oscillation signal of the same discharge tube.The results show that,the laser oscillation was initiated at the center of the hollow cathod,then extended to whole hollow cathed.The maxmum gain of 103% m-1 was gotten in the optimum pressure ratio of He and Kr.It was arrived at about 2 μs after the dicharge,corresponding to peak of the laser pulse. The gain of laser oscillation is the highest in the reported results on this spectral line.Using the method of inserting the calibrated attenuation plates the gain was measured in the same discharge condition also.It shows that, the above measurement result is reliable.
Using the "optical signal itself amplifing method",proposed by authors, the spatial and temporal gain characteristics of Kr Ⅱ 469.5 nm laser oscillation in pulsed hollow cathode discharge (HCD) was measursd by the self laser oscillation signal of the same discharge tube.The results show that,the laser oscillation was initiated at the center of the hollow cathod,then extended to whole hollow cathed.The maxmum gain of 103% m-1 was gotten in the optimum pressure ratio of He and Kr.It was arrived at about 2 μs after the dicharge,corresponding to peak of the laser pulse. The gain of laser oscillation is the highest in the reported results on this spectral line.Using the method of inserting the calibrated attenuation plates the gain was measured in the same discharge condition also.It shows that, the above measurement result is reliable.
1987, 11(2): 18-22.
Abstract:
The steady state characteristcs for buried crescent InGaAsP/InP laser are investigated by effective refraction index method and numerical method. The carrier distribution for various structure parameters and the relationship between threshold current and structure parameters are given.
The steady state characteristcs for buried crescent InGaAsP/InP laser are investigated by effective refraction index method and numerical method. The carrier distribution for various structure parameters and the relationship between threshold current and structure parameters are given.
1987, 11(2): 23-29,66.
Abstract:
In the excimer laser cell with longitudinal e-beam excitation,the mag netic field monitored by a standard resistor or a probe coil with integrator are described.A graphite calorimeter is employed which measures the total e-beam energy.For monitoring the position of the e-beam in the cell, using the diazochrome film we have got the e-beam's spatial FWHM of 2.7cm.The Faraday probe,which consists of a concentric conductor with an impedance of 50Ω,is used to diagnose the temporal behavior of the e-beam pulse.
In the excimer laser cell with longitudinal e-beam excitation,the mag netic field monitored by a standard resistor or a probe coil with integrator are described.A graphite calorimeter is employed which measures the total e-beam energy.For monitoring the position of the e-beam in the cell, using the diazochrome film we have got the e-beam's spatial FWHM of 2.7cm.The Faraday probe,which consists of a concentric conductor with an impedance of 50Ω,is used to diagnose the temporal behavior of the e-beam pulse.
1987, 11(2): 30-37.
Abstract:
The electrical parameters of the charge,preionization and main discharge processions have been computaed theoretically and measured experimentally for a TEA CO2 laser excited by the Blumine circuit.The theoretical results are in very good agreement with the experimental results.
The electrical parameters of the charge,preionization and main discharge processions have been computaed theoretically and measured experimentally for a TEA CO2 laser excited by the Blumine circuit.The theoretical results are in very good agreement with the experimental results.
1987, 11(2): 38-41.
Abstract:
For the sake of safety evaluation,methods of computation and measurement of laser radiant exposure (irradiance),the effect of atmospheric propagation on beam intensity distribution were discussed briefly in this paper.Using laser rangefinders as examples,the calculation values of radiant exposure were compared with those measured.
For the sake of safety evaluation,methods of computation and measurement of laser radiant exposure (irradiance),the effect of atmospheric propagation on beam intensity distribution were discussed briefly in this paper.Using laser rangefinders as examples,the calculation values of radiant exposure were compared with those measured.
1987, 11(2): 42-46.
Abstract:
This paper discribe a method for measuring the transmittance and refractive index of a optical material with high absorption.Lambert law has been used in the calculation.
This paper discribe a method for measuring the transmittance and refractive index of a optical material with high absorption.Lambert law has been used in the calculation.
1987, 11(2): 47-53,22.
Abstract:
Basic compiler supports the most functions of interpreting Basic language.In this paper compilering process for Basic interpreting the optical design progrom is described,the processing method is emphasised;the difference in the Basic language between interpreting and compiler is discussed with optical design subroutine and multiple——statement lines.
Basic compiler supports the most functions of interpreting Basic language.In this paper compilering process for Basic interpreting the optical design progrom is described,the processing method is emphasised;the difference in the Basic language between interpreting and compiler is discussed with optical design subroutine and multiple——statement lines.
