A Circuit Structure of Pulse Current Source with Narrow Pulse Width and High Repetition Frequency

A technology with high repetition frequency and circuit structure, applied in the direction of pulse duration/width modulation, etc., can solve the problems of insufficient pulse height, insufficient repetition frequency, and insufficient front edge, etc., to achieve large current variation range, small overshoot, The effect of a steeper frontier

CN104135253BActive Publication Date: 2017-11-24INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-11-24

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Abstract

The invention discloses a circuit structure of a pulse current source with narrow pulse width and high repetition frequency, which is characterized in that it comprises an adjustable reference voltage input module (1), a current source module (2), an adjustable pulse generation and shaping module (3 ), a high-speed selection module (4) and a current mirror module (5); wherein, the adjustable reference voltage input module (1), the current source module (2), and the current mirror module (5) are electrically connected in sequence, and the The adjustable pulse generating and shaping module (3), the high-speed selection module (4), and the current mirror module (5) are electrically connected in sequence. The invention can adjust pulse width, current size and pulse frequency, and has the advantages of narrow pulse width, high repetition frequency, large current, small overshoot and steep leading edge.
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Description

technical field

[0001] The present invention relates to the technical field of semiconductor laser drive source, more specifically, relates to a pulse current source circuit structure with narrow pulse width, high repetition frequency, high current and low overshoot. Background technique

[0002] With the development of semiconductor laser manufacturing technology and design level, semiconductor lasers with high repetition frequency, fast front, narrow pulse width and high peak power have been widely used in industry, military, scientific research and other fields, especially in laser ranging, laser Radar, laser communication and other fields. To obtain a high-energy, narrow-pulse-width optical pulse for a high-power semiconductor laser, a pulsed current source that can provide good driving is required, which not only requires the output current pulse to have a high repetition rate, fast rising edge, and narrow pulse Width, a certain amplitude, and the waveform of the outpu...

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0017] It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. And in the accompanying drawings, it is marked for simplicity or convenience. Furthermore, implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values ​​may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error margins or design constraints.

[0018] see figure 1 As shown, the present invention provi...