High efficiency synchronous pulse laser driver system

Chen, Fu-Zen; Wang, Jiayou; Song, Yu-Cheng; Ho, Fu-Shun

doi:10.1109/ifeec.2017.7992335

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…The power loop is a negative feedback control circuit that detects and feeds back the LD output optical power through the photodiode, which is packaged in the LD interior. 34 The power loop is the outer loop and is the constant power control system, which is composed of input quantity, output quantity, the controlled object, the measuring element and so on. Its input quantity is the set power, and it is converted through the microcontroller into a digital signal, and the signal is provided by the digital potentiometer.…”

Section: Power Loopmentioning

confidence: 99%

A novel power stability drive system of semiconductor Laser Diode for high-precision measurement

Huang

Wang

et al. 2019

Measurement and Control

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In view of the strict requirements of the current high-precision measurement system for stable output power of the semiconductor LD (Laser Diode), a semiconductor LD stable power drive and multi-closed-loop control system are proposed after analyzing the semiconductor laser’s P–I (Power–Current) characteristics and temperature characteristics. The system uses a microcontroller as the core control unit and realizes the stable power output control of the semiconductor laser by controlling the current, power and temperature parameters. In this system, first, the control structure model of the controlled object has been designed. Second, a controllable closed-loop constant current feedback drive circuit has been designed and a high-precision controllable constant current drive circuit of the semiconductor laser has been obtained. Furthermore, the control circuit has been designed based on the neural PI (Proportional-Integral) control model and realizes the short-term stable power output of the semiconductor LD. Finally, a closed-loop temperature control system is designed to ensure that the operating temperature of the semiconductor laser is relatively stable and a long-term stable power output is obtained. By designing the hardware and software of the control system and conducting long-term experiments in the laboratory, we found that the system can guarantee the output power within 1 W of PD (Proportional-Differential) LD, and its long-term power stability can reach 1%. This system has a certain reference significance in using semiconductor lasers for high-quality detection when there are stringent requirements for power.

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Section: Power Loopmentioning

confidence: 99%

A novel power stability drive system of semiconductor Laser Diode for high-precision measurement

Huang

Wang

et al. 2019

Measurement and Control

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“…Some efforts to improve switched mode power supply have been undertaken in [9], [16]- [19]. Typically, a buck current source is simple and easy to implement [20], [21], but the current rising edge is limited by the circuit parameters, and the current ripple and pulse edge response speed are compromised. To improve the rising edge whilst maintaining a low current ripple, a switch shunt concept with higher inductance was adopted named inductive storage topology and present in [16]- [18], as shown in Fig.…”

mentioning

confidence: 99%

Pulse Power Supply With Faster Response and Low Ripple Current Using Inductive Storage and Interleaving Technology

Yuan¹,

Xu²

2020

CPSS TPEA

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Switched mode pulse power supply is a promising technique for high-power quasi-continuous laser driver. Contrast to lossy linear laser drivers, switched mode laser drivers can achieve higher efficiency. However, many challenges have been proposed, such as fast pulse edge, low current ripple. This paper proposes a multiphase interleaved pulse power supply with energy recovery and inductive storage (MIEF-PPS). The basic concept of the topology is the inclusion of a multiphase converter with pulse forming circuits to the converter system, which decouples the current slew rate and current ripple. Using an inductive storage technology and pulse forming circuits, a shorter pulse current rising time is obtained. The inductor energy is fed back to the input source not discharged to the load, resulting in a fast pulse trailing edge and energy saving. Thus the pulse current response observed when using this proposed technique is found to be much faster when compared to the conventional interleaved buck driver. Moreover, a pre-charge method is proposed to overcome the challenge of digitally controlling the inductive storage. The proposed topology was simulated in MATLAB/Simulink and validated against the experimental results of a laboratory prototype, 360 W dual-interleaved pulsed power supply. Index Terms-Energy recovery, fast response, multiphase interleaved, precharge control, pulse power supply. I. IntroductIonH IGH-POWER semiconductor laser arrays are vital in many fields, such as medical, industrial, and military fields, because of their advantages such as having a small volume, low weight, high efficiency, good beam quality, high reliability, and long lifespan [1]- [4]. A laser diode (LD) is a current-driven device and ha s similar characteristics to a lightemitting diode. From the voltage-current (V-I) characteristic and the characteristic curve of the optical power and injection current (P-I) of a laser diode [5], [6], it is sensitive to current

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A SiC based Two-Stage Pulsed Power Converter System for Laser Diode Driving Applications

Kokkonda

Bhattacharya

Veliadis

et al. 2022

2022 IEEE Energy Conversion Congress and Exposition (ECCE)

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High efficiency synchronous pulse laser driver system

Cited by 6 publications

References 8 publications

A novel power stability drive system of semiconductor Laser Diode for high-precision measurement

A novel power stability drive system of semiconductor Laser Diode for high-precision measurement

Pulse Power Supply With Faster Response and Low Ripple Current Using Inductive Storage and Interleaving Technology

A SiC based Two-Stage Pulsed Power Converter System for Laser Diode Driving Applications

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