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RSS1987 Vol. 11, No. 6
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1987, 11(6): 1-5.
[Abstract]
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Abstract:
Femtosecond laser technology incluing generation,compression,amplification and measurement of femtosecond light pulses and its applications are surveyed.
Femtosecond laser technology incluing generation,compression,amplification and measurement of femtosecond light pulses and its applications are surveyed.
1987, 11(6): 6-13.
Abstract:
A overview of present states and trends of overseas optical fiber communications is given and some suggestions on building chinese optical fiber communication industry are made.
A overview of present states and trends of overseas optical fiber communications is given and some suggestions on building chinese optical fiber communication industry are made.
1987, 11(6): 14-18.
Abstract:
Experimental methods for Vapor-pbase mixed deposition have been described by which thin films with prescribed indexes have been formed successfully.
Experimental methods for Vapor-pbase mixed deposition have been described by which thin films with prescribed indexes have been formed successfully.
1987, 11(6): 19-22.
Abstract:
The experimental method to deposite variableindex layers has been described in detail in which the CO-vaporation or vapor-phase mixed technique is used,and a series of precautions during CO-vaporation deposition have been presented.As an example,a three-layer antireflection coating with a gradient index layer has been given.
The experimental method to deposite variableindex layers has been described in detail in which the CO-vaporation or vapor-phase mixed technique is used,and a series of precautions during CO-vaporation deposition have been presented.As an example,a three-layer antireflection coating with a gradient index layer has been given.
1987, 11(6): 23-25.
Abstract:
The output from a dye Q-switched YAP frequency-doubled laser(λ0= 0.5398μm,30ns pulse duration)was focused into a CS2 cell,4 order of stokes stimulated Raman scattering and 2 order of anti-stokes scattering and the pulse half width with 5×10-9 sec have been obtained in the backward direction.
The output from a dye Q-switched YAP frequency-doubled laser(λ0= 0.5398μm,30ns pulse duration)was focused into a CS2 cell,4 order of stokes stimulated Raman scattering and 2 order of anti-stokes scattering and the pulse half width with 5×10-9 sec have been obtained in the backward direction.
1987, 11(6): 26-30.
Abstract:
A small laser device with piano-convex resonant cavity module,which has stable output energy,small divergence angle,high ranging power,small bulk and light weight is described.
A small laser device with piano-convex resonant cavity module,which has stable output energy,small divergence angle,high ranging power,small bulk and light weight is described.
1987, 11(6): 31-34,18.
Abstract:
This Paper declares the design and fabrication of a sealed kigh repetition rate TEA CO2laser,which of the fundamental data and experimental Primary results are given.
This Paper declares the design and fabrication of a sealed kigh repetition rate TEA CO2laser,which of the fundamental data and experimental Primary results are given.
1987, 11(6): 35-38.
Abstract:
When the Rght at the 45° incidence,by pass through the reflection intensity of medium surface which placed in the air,it can use mathematics description of polarizing to show.And it combined with the complex amplitude rs,rp of Fresnel reflection factor when the light reflected at the interface of two transparent dielectric.In the dielectric constant ε between refraction medium and incident medium,there is a equation of rs-rp/1-rs·rp=1-ε/1+ε.From this,can get the complex-refractive index of medium.Its equation is N=rs2+1/(rs+1)2.
When the Rght at the 45° incidence,by pass through the reflection intensity of medium surface which placed in the air,it can use mathematics description of polarizing to show.And it combined with the complex amplitude rs,rp of Fresnel reflection factor when the light reflected at the interface of two transparent dielectric.In the dielectric constant ε between refraction medium and incident medium,there is a equation of rs-rp/1-rs·rp=1-ε/1+ε.From this,can get the complex-refractive index of medium.Its equation is N=rs2+1/(rs+1)2.
1987, 11(6): 39-44.
Abstract:
A new kind of loudspeaker vibration measurers is reported.Not only can it measurer the vibration characteristic of loudspeakers with its resulte in good aggreement with that measured by the traditional method,but measure the other parameters that the traditional can't.Thus an new measuring means is provided.
A new kind of loudspeaker vibration measurers is reported.Not only can it measurer the vibration characteristic of loudspeakers with its resulte in good aggreement with that measured by the traditional method,but measure the other parameters that the traditional can't.Thus an new measuring means is provided.
1987, 11(6): 45-48,30.
Abstract:
A Principle,method and instrument for laser beam divergence measurement by means of the threshold method are described.The instrument is easy to operate and fast to process data.The method is practical.
A Principle,method and instrument for laser beam divergence measurement by means of the threshold method are described.The instrument is easy to operate and fast to process data.The method is practical.
1987, 11(6): 49-52.
Abstract:
An error-detector that is useful for tracking target of small size is described.The Principle is simple and it cat be rcalized easily.It has been proved useful in practice and especially suitable for error-detecting in tracking single target.The formula of calculating error,method of realization and test result are given.
An error-detector that is useful for tracking target of small size is described.The Principle is simple and it cat be rcalized easily.It has been proved useful in practice and especially suitable for error-detecting in tracking single target.The formula of calculating error,method of realization and test result are given.
1987, 11(6): 53-57.
Abstract:
Television camera systems on board are analyzed with the transfer function,finding out the related factors of the Spectral working band.The spectral characteristics of ground targets,atmospheric transmittance function and the transfer function of the silicon-target vidicon are analyzed,the general conclusion obtained is that the optimal spectal working band of television camera systems on board should be selected between 0.7μm and.0.95μm of the near infrared range.
Television camera systems on board are analyzed with the transfer function,finding out the related factors of the Spectral working band.The spectral characteristics of ground targets,atmospheric transmittance function and the transfer function of the silicon-target vidicon are analyzed,the general conclusion obtained is that the optimal spectal working band of television camera systems on board should be selected between 0.7μm and.0.95μm of the near infrared range.
1987, 11(6): 58-62.
Abstract:
This thesis introduces a measuring method of the kerr hysteresis loop of the magneto-optical material by means of a He-Ne laser.In the optical system of our device,a magneto-optical thin film is used as a polarization rotation angle compensator and as amodulator.The microcomputer is used to collect the measured data and process them,The measurement results are printed out finally.The automatic measurement of the hysteresis loop is realized.
This thesis introduces a measuring method of the kerr hysteresis loop of the magneto-optical material by means of a He-Ne laser.In the optical system of our device,a magneto-optical thin film is used as a polarization rotation angle compensator and as amodulator.The microcomputer is used to collect the measured data and process them,The measurement results are printed out finally.The automatic measurement of the hysteresis loop is realized.
