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Electro-optics exhibition & conference 光电展览及会议
Optics Technology
Pub Date : 1970-08-01 DOI: 10.1016/0374-3926(70)90064-5
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引用次数: 0
Applications and technology of holography-II 全息技术的应用与技术2
Optics Technology
Pub Date : 1970-08-01 DOI: 10.1016/0374-3926(70)90052-9
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引用次数: 0
OSA spring meeting OSA春季会议
Optics Technology
Pub Date : 1970-08-01 DOI: 10.1016/0374-3926(70)90045-1
M.H. Freeman
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引用次数: 1
Thin-film optical filters 薄膜滤光片
Optics Technology
Pub Date : 1970-08-01 DOI: 10.1016/0374-3926(70)90051-7
A. Thetford
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引用次数: 9
Application of holography to bubble chambers- a review 全息技术在气泡室中的应用综述
Optics Technology
Pub Date : 1970-08-01 DOI: 10.1016/0374-3926(70)90036-0
R.J. Withrington

The use of holography to provide adequate focal depth is discussed, together with the appearance of track images reconstructed from image holograms of simulated bubble tracks whose small angle scattering function closely matches that of bubbles in liquid hydrogen. A brief description of the problems of bubble chamber optics is given, stressing the need to illuminate the chamber using Scotchlite on future large chambers. Experimental measurements of the contrast and widths of reconstructed track images are reported. Tolerances on the reference and reconstruction beam geometries and film flatness are given in relation to the measurement of bubble image positions to ± 1 μm in the hologram space. The formation of an image hologram minimises these tolerances and also permits the reconstruction stage to be carried out using a polychromatic extended source which could be useful for visual scanning of the track images.

讨论了利用全息技术提供足够焦深的方法，并从模拟气泡轨迹的图像全息图中重建轨迹图像，其小角度散射功能与液氢中气泡的小角度散射功能非常接近。简要描述了气泡室光学的问题，强调需要在未来的大型腔室上使用Scotchlite照明腔室。本文报道了重建轨道图像对比度和宽度的实验测量结果。给出了参考光束和重建光束几何形状以及薄膜平面度在全息图空间中测量气泡像位置到±1 μm的公差。图像全息图的形成使这些公差最小化，并且还允许使用多色扩展源进行重建阶段，这可能对轨道图像的视觉扫描有用。
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引用次数: 2
Daylight and its spectrum 日光及其光谱
Optics Technology
Pub Date : 1970-08-01 DOI: 10.1016/0374-3926(70)90049-9
W.D. Wright
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引用次数: 0
New company expects £0.75m turnover in 2 years 新公司预计两年内营业额为75万英镑
Optics Technology
Pub Date : 1970-08-01 DOI: 10.1016/0374-3926(70)90056-6
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引用次数: 0
Ultra-short light pulses 超短光脉冲
Optics Technology
Pub Date : 1970-08-01 DOI: 10.1016/0374-3926(70)90035-9
N.G. Basov, P.G. Krjukov, V.S. Letokhov

After an introduction of ways of increasing laser power the authors briefly discuss the mechanism and evaluation of u.s.p. generation by self mode-locking. They describe their own work (in relation to that of others) in the U.S.S.R., on u.s.p. generation in a laser with a non-linear absorber. Their experiments yield on explanation of generation of u.s.p. as radiation pulse passes through a 2-component medium. The pulses can be amplified but the increase in power is limited by atomic processes in the active medium. Possible ways of overcoming the problems are indicated, such as using one pulse passing several times through an amplification rod. It is then possible to obtain pulses having controlled durations with energies of several joules.

在介绍了提高激光功率的方法后，简要讨论了自锁模产生超脉冲的机理和评价。他们描述了他们自己在苏联的工作(与其他人的工作相联系)，在非线性吸收器激光器中产生u.s.p。他们的实验给出了当辐射脉冲通过双组分介质时产生超脉冲的解释。脉冲可以被放大，但功率的增加受到活性介质中原子过程的限制。指出了克服这些问题的可能方法，例如使用一个脉冲多次通过放大棒。这样就有可能获得能量为几焦耳、持续时间可控的脉冲。
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引用次数: 25
Rock probe deformation measured by holographic interferometry 全息干涉法测量岩石探头变形
Optics Technology
Pub Date : 1970-08-01 DOI: 10.1016/0374-3926(70)90039-6
W. Fink, P.A. Büger, L. Schepens

Mechanical pressure-induced deformations of cylindrical rock probes were measured by holographic time-lapse interferometry. As it was generally impossible to find any zeroth-order fringes, a moving-fringe evaluation method as first given by Bonch-Bruevich was used. Small displacements parallel to the hologram plane could thus be measured with very high accuracy. The method is applicable to any type of local displacement of surface elements, limited only by the solid angle subtended at the hologram by the object.

采用全息延时干涉法测量了圆柱形岩石探针的机械压力变形。由于通常不可能找到零阶条纹，因此采用了最早由Bonch-Bruevich给出的移动条纹评价方法。因此，平行于全息图平面的小位移可以以非常高的精度测量。该方法适用于任何类型的表面单元的局部位移，仅受物体在全息图上的立体角的限制。
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引用次数: 1
High-speed photography and shock tubes 高速摄影和激波管
Optics Technology
Pub Date : 1970-08-01 DOI: 10.1016/0374-3926(70)90044-X
J.W.C. Gates
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引用次数: 0
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