Research on adjustable high power high pulse-repetition-frequency compact LD power supply

ZHANG Yan-chao; SUN Lan-jun; FU Shi-you; LIU Li-bao; TIAN Zhao-shuo

doi:10.3969/j.issn.1001-3806.2012.06.005

LASER TECHNOLOGY > 2012 > 36(6): 731-734. > DOI: 10.3969/j.issn.1001-3806.2012.06.005

ZHANG Yan-chao, SUN Lan-jun, FU Shi-you, LIU Li-bao, TIAN Zhao-shuo. Research on adjustable high power high pulse-repetition-frequency compact LD power supply[J]. LASER TECHNOLOGY, 2012, 36(6): 731-734. DOI: 10.3969/j.issn.1001-3806.2012.06.005

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Research on adjustable high power high pulse-repetition-frequency compact LD power supply

Information Optoelectronics Research Institute, Harbin Institute of Technology at Weihai, Weihai 264209, China

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Received Date: March 22, 2012
Revised Date: April 22, 2012
Published Date: November 24, 2012

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Abstract

In order to obtain high power and high pulse-repetition-frequency(PRF) laser pulse,a nanosecond nanosecond-level laser diode driver with advantages of small size,light weight and low cost was designed.The narrow pulse,which was generated by an improved mono-stable circuit,was amplified to high current narrow pulse to drive metal-oixde-semiconducor field-effect-transistor(MOSFET)switch for narrow pulse of high current.The output current of the driver was 0A~80A;the rise time of the pulse was 2.8ns;the fall time was 3.8ns;the pulse width can could be adjusted between 5ns and 500ns;the narrowest with the minimal pulse width can be of 5.2ns;and the PRF pulse repetition frequency was up to 200kHz.When this power supply was used for a 905nm laser diode,its peak laser power was up to 70W at PRF of 10kHz.The results show that the narrow pulse can be used to drive MOSFET to obtain 10ns or narrower pulse with high PRF and current,and this driver can completely meet the demand for driving high power laser diode.Further research is necessary for 100A or higher drive current.
- laser technique,
- lasers,
- laser diode power supply,
- MOSFET switch,
- narrow pulse,
- pulse-width-tunable,
- high pulse-repetition-frequency

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