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Pulse replicating loop device used for improving single nanosecond pulse measurement dynamic range

A nanosecond pulse, single measurement technology, applied in instruments and other directions, can solve the problem that a single pulse high energy emission cannot provide multiple sampling data, etc., and achieves the effect of compact structure, simple adjustment and flexible use.

Active Publication Date: 2011-09-14
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Claims
  • Application Information

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Problems solved by technology

However, it cannot provide multiple sampling data for single-pulse high-energy emission

Method used

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  • Pulse replicating loop device used for improving single nanosecond pulse measurement dynamic range
  • Pulse replicating loop device used for improving single nanosecond pulse measurement dynamic range
  • Pulse replicating loop device used for improving single nanosecond pulse measurement dynamic range

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0028] see first figure 1 , figure 1 It is a structural schematic diagram of the pulse replicating ring device of the present invention. As can be seen from the figure, the pulse replica ring device used to improve the dynamic range of nanosecond pulse single measurement in the present invention includes a 3dB beam splitter 1 with 2*2 ports, the first input end of the 3dB beam splitter 1 and the first The output ends constitute the input end and the output end of the pulse replication ring respectively, and between the second output end and the second input end of the 3dB beam splitter 1, the optical fiber attenuator 2, the first optical fiber isolator 3, 2×1 wavelength division multiplexer 6, doped with Yb 3+ Gain fiber 7, second fiber isolator 8, ASE filter 9, 1×2 port...

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Abstract

The invention discloses a pulse replicating loop device used for improving a single nanosecond pulse measurement dynamic range. The device is characterized by comprising a 2*2 port 3dB beam splitter, an optical fiber attenuator, a first optical fiber isolator, a 2*1 port wavelength division multiplexer, a Yb<3+>-doped gain optical fiber, a second optical fiber isolator, an ASE filter and a 1*2 port optical fiber beam splitter, wherein the input end of a pulse replicating loop is connected with nanosecond pulse light source to be measured; and the output end of the pulse replicating loop is connected with a PIN tube and an oscillograph and is used for collecting a pulse replication string. By using the pulse replicating loop, an input nanosecond pulse is replicated into a series of uniformly-spaced pulse strings of which the amplitudes are exponentially decreased; and the PIN tube and the oscillograph receive an optical pulse sequence and perform data processing. An experiment shows that: a measurement dynamic range is improved by 2 to 3 times after progressive mean by replicating a single nanosecond optical pulse by using a simple pulse replicating loop.

Description

technical field [0001] The present invention relates to nanosecond pulse measurement, in particular to a pulse replication ring device for improving the dynamic range of nanosecond pulse single measurement. It can effectively improve the dynamic range of a single nanosecond (ns) pulse measurement, and has the advantages of compact structure, simple adjustment and flexible use. Background technique [0002] Lasers with ns wavelengths are widely used in laser ranging and remote sensing detection, especially in inertial confinement fusion (ICF) laser systems, which require stable, high-contrast, and special waveform pulses to compress the target as much as possible. So accurate measurement of laser pulse waveform is very critical for these special applications. [0003] Although nonlinear techniques are capable of measuring contrast ratios of 10 7 pulse waveform, but for the ns-level pulse width, there are only two measurement methods: a streak camera or a PIN tube and an osc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J11/00
Inventor 潘雪李国扬陈宇李学春王江峰姜有恩卢兴华张鹏李响
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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