Optical delay structure and device
An optical delay and reflective technology, applied in the field of optical delay, can solve the problems of difficult data processing and pulse signal distortion, and achieve the effects of less distortion, stable pulse signal and simple data processing
Active Publication Date: 2018-03-02
深圳市华讯方舟光电技术有限公司 +1
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[0003] Based on this, it is necessary to provide an optical delay structure and
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[0019] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of describing specific embodiments, and is not intended to limit the present invention.
[0021] like figure 1 As shown, it is a schematic plan view of an optical retardation ...
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The present invention provides an optical delay structure and device. The optical delay structure comprises a first reflection curved surface and a second reflection curved surface which are in smoothconnection, wherein the projection of the first reflection curved surface in a set plane is a first curve, the projection of the second reflection curved surface in the same set plane is a second curve, and the first curve and the second curve are in smooth connection. The set plane is defined as an x-y plane, and the first reflection curved surface and the second reflection curved surface satisfy the conditions that when being irradiated to the first reflection curved surface from a first position outside the delay structure and in a direction parallel with the x-y plane, the light is reflected to the second reflection curved surface via the first reflection curved surface, and is emitted to a second position outside the delay structure via the second reflection curved surface in a direction parallel with the incident direction. The present invention also provides an optical delay device. According to the present invention, an external driving structure drives the optical delay device to rotate at a uniform velocity, so that the linearity of the light delay and the time can be obtained by the linearity of the light delay and the rotation angle.
Description
technical field [0001] The invention relates to the field of optical delay, in particular to an optical delay structure and device. Background technique [0002] At present, the terahertz pulse signal width generated by the terahertz time-domain spectrometer is only a few picoseconds, and a femtosecond laser needs to be used to excite the semiconductor to sample the pulse signal. The arrival time of the femtosecond laser pulse to terahertz needs to be changed in order to collect the signal intensity at different positions of the terahertz pulse. The femtosecond laser passes through the delay line, which can change the optical path of the femtosecond laser. The linearity of the delay line will affect the accuracy and consistency of the collected signal. The nonlinear delay line will cause the femtosecond laser pulse optical path to change nonlinearly, and the collected signal will also be nonlinear, which will distort the terahertz pulse signal. Increase the difficulty of d...
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Login to View More IPC IPC(8): G02B26/08
CPCG02B26/0816
Inventor 何坚兵潘奕丁俊侠丁庆
Owner 深圳市华讯方舟光电技术有限公司