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    • 62. 发明授权
    • Compact optical source based on the frequency doubling of a laser
    • 基于激光倍频的紧凑光源
    • US5610759A
    • 1997-03-11
    • US496318
    • 1995-06-29
    • Dominique DelacourtMichel Papuchon
    • Dominique DelacourtMichel Papuchon
    • H01S3/109H01S5/14G02F1/37
    • H01S3/109H01S5/141
    • Disclosed is a compact and coherent optical source using a laser that emits an incident wave at a wavelength .lambda.o.sub.i, a non-linear medium (NLM) in which the phase matching condition is verified at the wavelength .lambda.o.sub.a belonging to the set of .lambda.o.sub.i values. This optical source furthermore has two dichroic mirrors M1 and M2 at the points of entry into and exit from the non-linear medium that are highly transparent at the wavelengths .lambda.o.sub.i and highly reflective at the wavelengths .lambda.o.sub.i /2. Such a configuration advantageously enables the locking of the emission of the laser into the wavelength .lambda.o.sub.a, the recovery of a light wave at .lambda.o.sub.a /2 and, thus, the amplification of the emitted power at .lambda.o.sub.a /2. Application to blue sources.
    • 公开了使用发射波长λoi的入射波的激光器的紧凑且相干的光源,非线性介质(NLM),其中在属于λoi集合的波长λa处验证相位匹配条件 价值观。 该光源还在进入和离开非线性介质的点处具有两个分色镜M1和M2,所述非线性介质在波长λoi处是高度透明的,并且在λoi / 2波长处具有高反射性。 这样的配置有利地使激光器的发射锁定成波长λaa,以λoa / 2的方式恢复光波,并且因此在λa/ 2下放大发射功率。 应用于蓝光源。
    • 66. 发明授权
    • Electromagnetic wave detector and image analyzer comprising a detector
of this type
    • 电磁波检测器和图像分析仪,包括这种检测器
    • US5160991A
    • 1992-11-03
    • US764096
    • 1991-09-23
    • Dominique DelacourtMichel PapuchonJean-Paul Pocholle
    • Dominique DelacourtMichel PapuchonJean-Paul Pocholle
    • H01L31/0352H01L31/101
    • B82Y20/00H01L31/0352H01L31/035236H01L31/101
    • The detector can be used to detect a wave in the medium infrared range by controlling the detector through optical pumping by means of a near infrared wave. In this case, the detector has a quantum well structure consisting of alternating first layers and second layers, these materials being such that there is a potential well in the conduction band and the valence band of each first layer. The thickness of each first layer is such that the electrons of the conduction band have at least one permitted discrete level of energy, such that the difference in energy between this level and the bottom of the conduction band in the second layers is smaller than or equal to the energy corresponding to the frequency of the wave to be detected; and such that the difference in energy between the fundamental level permitted for the holes in the valence band and the fundamental level permitted for the electrons in the conduction band corresponds to a frequency close to the frequency of the control wave.
    • 检测器可用于通过利用近红外波的光泵浦来控制检测器来检测中红外范围的波。 在这种情况下,检测器具有由交替的第一层和第二层组成的量子阱结构,这些材料使得在每个第一层的导带和价带中存在势阱。 每个第一层的厚度使得导带的电子具有至少一个允许的离散水平的能量,使得该水平和第二层中的导带的底部之间的能量差异小于或等于 对应于待检测波的频率的能量; 并且使得在价带中的空穴允许的基本电平和导带中的电子所允许的基波电平之间的能量差异对应于接近控制波的频率的频率。