Semiconductor-laser narrow pulse driving circuit and working method thereof
A drive circuit and narrow pulse technology, which is applied in the direction of semiconductor lasers, lasers, laser components, etc., can solve the problem of inability to achieve sub-nanosecond pulse width optical pulse signal output, increase signal rise and fall time, and increase system complexity problems such as high degree of accuracy, and achieve the effect of adjustable pulse width and repetition frequency, large driving current, and simple structure
Inactive Publication Date: 2017-05-10
SHANDONG UNIV
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The invention relates to a semiconductor-laser narrow pulse driving circuit and a working method thereof. The semiconductor-laser narrow pulse driving circuit comprises an external power supply interface circuit, a narrow pulse generating circuit and a MOSFET pulse driving circuit. The external power supply interface circuit provides power for the narrow pulse generating circuit and the MOSFET pulse driving circuit respectively. Through controlling a pulse width and a repetition frequency of a narrow pulse generating circuit trigger signal, a semiconductor laser can acquire a light pulse signal with the continuous adjustable pulse width and the repetition frequency. The trigger signal generated by the narrow pulse generating circuit directly drives a drain electrode switch of a MOSFET driving chip field effect transistor and a grid electrode of the field effect transistor is connected to a stable voltage so that a problem that signal rise time and fall time are too long when a pulse signal is directly used to drive the grid electrode of the field effect transistor can be avoided.
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Property | Measurement | Unit |
Pulse width | 538.0 | ps |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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