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RSS1987 Vol. 11, No. 3
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1987, 11(3): 1-6.
[Abstract]
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Abstract:
A survey of theoritical and experimental advance on mechanism and thre-shold of air breakdown induced by high-power laser,and breakdown-region character is presented in this paper.The steps for increasing threshold are also discussed briefly.
A survey of theoritical and experimental advance on mechanism and thre-shold of air breakdown induced by high-power laser,and breakdown-region character is presented in this paper.The steps for increasing threshold are also discussed briefly.
1987, 11(3): 7-10,61.
Abstract:
In this paper we have first introduced the propagation theory of optical beam in the optical fiber and the requirements for conditions.the incident optical beam,then we have found the propagation According to these conditions a available method,making the terminal face of the optical fiber to be a convex lens is Provided.By this method we can not only increase the requirements for the incident optical beam and the adjustment for coupling.
In this paper we have first introduced the propagation theory of optical beam in the optical fiber and the requirements for conditions.the incident optical beam,then we have found the propagation According to these conditions a available method,making the terminal face of the optical fiber to be a convex lens is Provided.By this method we can not only increase the requirements for the incident optical beam and the adjustment for coupling.
1987, 11(3): 11-17.
Abstract:
The preliminary experiments using the model SF-3A quartz crystal monitor for infrared coating are described.SF-3A monitor is feasible as a film thickness monitor,and the resulting results are consistent with the calculation and similar with optical monitoring.
The preliminary experiments using the model SF-3A quartz crystal monitor for infrared coating are described.SF-3A monitor is feasible as a film thickness monitor,and the resulting results are consistent with the calculation and similar with optical monitoring.
1987, 11(3): 24-25.
Abstract:
A set of test and measurement system for laser ranging has been deve-loped by using DBJ-Z80 single-board computer.In this paper we have introduced the operation principles test software and hardware interface of this system.
A set of test and measurement system for laser ranging has been deve-loped by using DBJ-Z80 single-board computer.In this paper we have introduced the operation principles test software and hardware interface of this system.
1987, 11(3): 34-38.
Abstract:
Characteristics of laser weapons in short range defense systems are described.General situations of tactical laser weapons in some countries are introduced some ideas on ship-based laser weapons are put forward.
Characteristics of laser weapons in short range defense systems are described.General situations of tactical laser weapons in some countries are introduced some ideas on ship-based laser weapons are put forward.
1987, 11(3): 39-45.
Abstract:
Laser alloying with 5kW transverse-flow CO2 laser on the surfaces of No.45 steel examples are investigated in this paper.The surffaces of these examples have been coated with Co base alloy powder or Cr powder Laser alloying surfaces analysis were carried out by utilizing microscopy and energy spectrum method.It has been shown in our experiment that laser alloying on the surfaces of No.45 steel is possiable and is beneficial to improving wear and erosion resistance and so on.
Laser alloying with 5kW transverse-flow CO2 laser on the surfaces of No.45 steel examples are investigated in this paper.The surffaces of these examples have been coated with Co base alloy powder or Cr powder Laser alloying surfaces analysis were carried out by utilizing microscopy and energy spectrum method.It has been shown in our experiment that laser alloying on the surfaces of No.45 steel is possiable and is beneficial to improving wear and erosion resistance and so on.
1987, 11(3): 46-50.
Abstract:
On the principle of optomagnetic recording and readout,the requirements of recording materials and the methods of raising S/N ratio are discussed in the paper.The optical head,a key component of the recording and read-out device is analyzed and studied.The main test parameters and require-ments of optomagnetic disc are also given in the paper.
On the principle of optomagnetic recording and readout,the requirements of recording materials and the methods of raising S/N ratio are discussed in the paper.The optical head,a key component of the recording and read-out device is analyzed and studied.The main test parameters and require-ments of optomagnetic disc are also given in the paper.
1987, 11(3): 54-56.
Abstract:
