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公开(公告)号：US3917384A
公开(公告)日：1975-11-04
申请号：US39615673
申请日：1973-09-11
Applicant: IBM
Inventor： HARPER JOHN S , LEAN ERIC G , SPILLER EBERHARD A , WILCZYNSKI JANUSZ S
CPC classification number: G02B6/1245
Abstract: A spherical depression lens is formed in a spherical depression in the substrate of the waveguide and a waveguide index lens is formed over the depression lens whereby the combination of the two lenses provides a high resolution waveguide lens for optical waveguides.
Abstract translation: 球面凹陷透镜形成在波导衬底中的球形凹陷处，并且在凹陷透镜之上形成波导折射透镜，由此两个透镜的组合为光波导提供高分辨率波导透镜。
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公开(公告)号：US3679985A
公开(公告)日：1972-07-25
申请号：US3679985D
申请日：1970-06-30
Applicant: IBM
Inventor： FANG FRANK F , LEAN ERIC G
Abstract: A parametric device for acoustic waves which does not depend on the non-linearities of a medium for operation. Both degenerate and non-degenerate parametric amplifier/converters are provided in which first order velocity changes give parametric interactions. The electric field associated with an acoustic wave in a piezolectric medium is modulated by an electric pump wave. This is accomplished by modulating the conductivity of a region in the piezoelectric medium, or close to that medium. The resulting modulation of the K-vector of the acoustic wave leads to parametric interactions between the acoustic signal wave, the electric pump wave, and the generated idler wave. Various effects, such as the field effect and the photoconductive effect, are used to modulate the conductivity of the region.
Abstract translation: 用于声波的参数化装置，其不依赖于用于操作的介质的非线性。 提供退化和非简并参数放大器/转换器，其中一阶速度变化给出参数相互作用。 与压电介质中的声波相关的电场由电泵波调制。 这是通过调制压电介质中的区域的电导率或接近该介质来实现的。 声波的K向量的最终调制导致声信号波，电泵波和产生的惰轮之间的参数相互作用。 使用诸如场效应和光电导效应的各种效应来调制该区域的电导率。
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公开(公告)号：US3633995A
公开(公告)日：1972-01-11
申请号：US3633995D
申请日：1970-02-17
Applicant: IBM
Inventor： LEAN ERIC G , PENNINGTON KEITH S , POLE ROBERT V , POWELL CARL G
Abstract: A system for deflecting a light beam such as a laser beam including a crystal substrate, preferably piezoelectric, having a reflective coating on its surface which functions as a mirror. At least one surface acoustic wave transducer is mounted on the crystal and is actuated by a high-frequency signal source. The transducer propagates surface acoustic waves on the crystal, which produce a periodic deformation on the mirror surface which functions as a phase grating. A light beam directed onto the mirror surface will therefore be deflected at an angle dependent on the acoustic frequency of the surface waves. A plurality of transducers arranged approximately in a semicircle on the crystal and selectively actuated provides a two-dimensional scanning system.
Abstract translation: 一种用于偏转光束的系统，该激光束包括晶体衬底，优选为压电体，其表面上具有反射涂层，其用作反射镜。 至少一个表面声波传感器安装在晶体上并由高频信号源致动。 传感器传播晶体上的表面声波，其在镜面上产生周期性变形，其用作相位光栅。 因此，指向镜面的光束将以取决于表面波的声频的角度偏转。 在晶体上大致半圆形布置并选择性地致动的多个换能器提供二维扫描系统。
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公开(公告)号：US3633996A
公开(公告)日：1972-01-11
申请号：US3633996D
申请日：1970-03-04
Applicant: IBM
Inventor： LEAN ERIC G , POLE ROBERT V , TSENG SAMUEL C
CPC classification number: G02F1/33
Abstract: A system for deflecting a light beam in two dimensions is described. The system includes a piezoelectric crystal having an acoustic surface wave transducer on its surface for propagating acoustic surface waves on the crystal. Means are provided for applying a nonuniform electric field to the crystal to vary the effective stiffness constant of the crystal in a nonuniform manner. When a beam of laser light is directed onto the crystal it is deflected in one dimension as a function of the frequency of the acoustic wave produced by the transducer and in a second dimension as a function of the nonuniform electric field.
Abstract translation: 描述了一种用于在两个维度上偏转光束的系统。 该系统包括在其表面上具有声表面波换能器的压电晶体，用于在晶体上传播声表面波。 提供了用于向晶体施加不均匀电场的装置，以不均匀的方式改变晶体的有效刚度常数。 当激光束被引导到晶体上时，其作为由换能器产生的声波的频率的函数在一维中被偏转，并且在作为不均匀电场的函数的第二维度中被偏转。
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Patent Agency Ranking
公开(公告)号：US3626324A
公开(公告)日：1971-12-07
申请号：US3626324D
申请日：1969-10-27
Applicant: IBM
Inventor： LEAN ERIC G , MYERS ROBERT A
Abstract: A volume reflector which may be employed as one or both of the end mirrors of a laser cavity. A laser cavity is provided including an active medium which is excited to produce stimulated emissions of light. A reflective means is located at each end of the cavity to reflect the light back into the cavity. One or both of the reflective means is an acoustic cell which is connected to a source of input signal, preferably at a microwave frequency. When particular relationships are satisfied, the light impinging on the acoustic cell is reflected back 180* by the standing acoustic wave fronts throughout the volume of the acoustic cell.
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公开(公告)号：US3675150A
公开(公告)日：1972-07-04
申请号：US3675150D
申请日：1970-06-30
Applicant: IBM
Inventor： HARRIS ERIK P , LEAN ERIC G , POWELL CARL G
CPC classification number: H01S5/0607 , H01S3/1068
Abstract: An injection laser whose light output is spatially modulated by internal effects in the active region of the laser. An acoustic wave is launched into the laser and is existent only in a small area including the active region of the laser. In low acoustic frequency operation, the acoustic wave is steered over an angle theta to cause the laser light output to be steered through this angle. In high frequency operation, the frequency of the acoustic wave can be changed to steer the light output, or the acoustic wave can be steered to cause light deflection, as in the low frequency case. The acoustic wave causes phase modulation and loss modulation which results in scanning of the light output. The acoustic wave can be a surface acoustic wave, a Love wave, or a Stonley wave.
Abstract translation: 一种注射激光器，其光输出由激光器的有源区域中的内部效应空间调制。 声波被发射到激光器中，并且仅存在于包括激光器的有源区域在内的小区域中。 在低声频率操作中，声波在角度θ上被转向，以使激光输出转过该角度。 在高频操作中，可以改变声波的频率以引导光输出，或者如在低频情况下可以引导声波引起光偏转。 声波引起相位调制和损耗调制，导致光输出的扫描。 声波可以是表面声波，爱波或斯托利波。
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公开(公告)号：US3675140A
公开(公告)日：1972-07-04
申请号：US3675140D
申请日：1970-06-30
Applicant: IBM
Inventor： FANG FRANK F , LEAN ERIC G
CPC classification number: H03F13/00
Abstract: An amplifier for Rayleigh surface acoustic waves in which an additional control is provided. A region of variable conductivity is located in close proximity to the surface on which the acoustic wave travels. Examples of this region are an inversion layer whose conductivity is controlled by electrical bias, and a bulk region whose conductivity is controlled by a variable width depletion region. The electric field produced by moving charge carriers in the variable conductivity region interacts with the piezoelectric field produced by the acoustic wave to transfer energy to the acoustic wave, or extract energy from this wave.
Abstract translation: 一种用于瑞利表面声波的放大器，其中提供附加控制。 可变导电区域位于声波传播的表面附近。 该区域的实例是其电导率由电偏压控制的反转层，以及其导电性由可变宽度消耗区域控制的体区。 通过在可变导电区域中移动电荷载流子产生的电场与由声波产生的压电场相互作用以将能量传递到声波，或从该波提取能量。
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8.发明授权Piezoelectric acoustic surface wave device utilizing an amorphous semiconductive sensing material 失效使用无定形半导体感应材料的压电声波表面波装置
公开(公告)号：US3648081A
公开(公告)日：1972-03-07
申请号：US3648081D
申请日：1970-06-30
Applicant: IBM
Inventor： LEAN ERIC G , SADAGOPAN VARADACHARI , TSENG SAMUEL C-C
CPC classification number: G11C21/023 , H03H9/423 , H03K5/15046
Abstract: An integrated acoustic surface wave device is provided by this disclosure wherein a piezoelectric field associated with an acoustic surface wave causes a material adjacent to the surface to transform from one physical state to another physical state. The changes in state due to the presence of the piezoelectric wave are utilized to detect, amplify and store information. The presence of the piezoelectric wave controls external physical quantities, e.g., voltage and current, for information processing and storage. In particular, an amorphous semiconducting material is deposited on the surface of a piezoelectric surface wave acoustic delay line at a location where the presence of the traversing piezoelectric wave is to be detected. Contact electrodes are provided on the amorphous material and are connected to an external electrical circuit wherein there is a voltage source and a load means. The voltage source provides an electric field in the amorphous material of a value below that necessary to achieve the threshold value for switching the material from a high-voltage and low-current state to a highcurrent and low-voltage state. In this manner, the piezoelectric field of the acoustic surface wave which transiently appears at the amorphous material when added to the externally applied electric field causes it to switch states and thereby gives rise to a pulse indication in the external electrical circuit. Accordingly, an integrated apparatus in accordance with this disclosure includes a piezoelectric surface wave delay line and an amorphous semiconductor film. A transducer on the surface of the piezoelectric crystal generates piezoelectric surface waves therein, and a local receiving transducer which serves as the electrodes for the amorphous semiconductor film intercepts the piezoelectric surface wave. The electric field associated with the surface wave supplements a bias electric field at the amorphous semiconductor film and causes the states thereof to switch and provides an indication of the presence of the piezoelectric wave in the external electric circuit connected to the amorphous film.
Abstract translation: 通过本公开提供了一种集成的声表面波装置，其中与声表面波相关联的压电场使得与表面相邻的材料从一个物理状态转变到另一个物理状态。 由于存在压电波而导致的状态变化被用于检测，放大和存储信息。 压电波的存在控制用于信息处理和存储的外部物理量，例如电压和电流。 特别地，非晶半导体材料沉积在压电表面波声延迟线的表面上，在要检测的横向压电波的存在的位置处。 接触电极设置在非晶材料上并且连接到外部电路，其中存在电压源和负载装置。 电压源在非晶材料中提供的电场值低于实现将材料从高电压和低电流状态切换到高电流和低电压状态的阈值所需的电压值。 以这种方式，当加到外部施加的电场时，在非晶材料瞬时出现的声表面波的压电场导致其转换状态，从而在外部电路中产生脉冲指示。
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公开(公告)号：US3614462A
公开(公告)日：1971-10-19
申请号：US3614462D
申请日：1969-01-02
Applicant: IBM
Inventor： LEAN ERIC G , MYERS ROBERT A , PENNINGTON KEITH S
CPC classification number: H01S3/1083 , G02F1/39
Abstract: A system for parametric amplification and detection of signals using an acoustic diffraction device in combination with two or more laser cavities. Two types of operation are provided in the disclosure. In the first type of operation, two laser cavities are arranged so that the axes of the cavities intersect at a selected angle. An acoustic Bragg cell is located in the cavities at the intersection point. The two end mirrors of the first cavity are fully reflective. One mirror of the second cavity is fully reflective and the other mirror is partially reflective and partially transmissive. The first laser cavity is operated above threshold condition and the second cavity is operated below threshold condition. When a signal having a particular frequency f is applied to the Bragg cell, part of the laser light of the first cavity is diffracted into the second cavity and raises the gain of the cavity above the threshold condition. The second cavity then oscillates and the output of the second cavity is detected through the partially transmissive mirror. In the second type of operation, the structure is the same, however, if desired, both cavities may operate above threshold. When a signal at frequency f is applied to the Bragg cell, light is diffracted from the first cavity into the second cavity and the two cavities become coupled and oscillate only at frequencies which can be supported by the two cavities operating independently. The laser light from the output mirror therefore changes frequency indicating the detection of a signal at frequency f.
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