A 46-W laser diode stack end-pumped slab amplifier with a pulse duration of picoseconds

Ying Yan; Zhong Wei Fan; Gang Niu; Jin Yu; Heng Li Zhang

doi:10.1088/0256-307X/29/3/034204

A 46-W laser diode stack end-pumped slab amplifier with a pulse duration of picoseconds

Ying Yan^*, Zhong Wei Fan, Gang Niu, Jin Yu, Heng Li Zhang

^*Corresponding author for this work

School of Optics and Photonics

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

A 46-W laser diode end-pumped amplifier is demonstrated by using a SESAM passively mode-locked oscillator and a compact LD stack end-pumped slab amplifier. For the oscillator, a 5-W picosecond mode-locked laser with a repetition frequency of 79 MHz is obtained with beam quality factors of M ² < 1.3. A beam shaping system made up of cylindrical lens is designed according to different sizes of the active medium in both directions, and a plane-plane cavity is used in the amplifier for high efficiency. At the absorbed pumping power of 174 W, the highest output power of 46 W is obtained with the slope efficiency of 29.5%. The beam quality factors M² in both directions are measured to be 1.43 and 1.76, respectively.

Original language	English
Article number	034204
Journal	Chinese Physics Letters
Volume	29
Issue number	3
DOIs	https://doi.org/10.1088/0256-307X/29/3/034204
Publication status	Published - Mar 2012

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abstract = "A 46-W laser diode end-pumped amplifier is demonstrated by using a SESAM passively mode-locked oscillator and a compact LD stack end-pumped slab amplifier. For the oscillator, a 5-W picosecond mode-locked laser with a repetition frequency of 79 MHz is obtained with beam quality factors of M 2 < 1.3. A beam shaping system made up of cylindrical lens is designed according to different sizes of the active medium in both directions, and a plane-plane cavity is used in the amplifier for high efficiency. At the absorbed pumping power of 174 W, the highest output power of 46 W is obtained with the slope efficiency of 29.5%. The beam quality factors M2 in both directions are measured to be 1.43 and 1.76, respectively.",

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AB - A 46-W laser diode end-pumped amplifier is demonstrated by using a SESAM passively mode-locked oscillator and a compact LD stack end-pumped slab amplifier. For the oscillator, a 5-W picosecond mode-locked laser with a repetition frequency of 79 MHz is obtained with beam quality factors of M 2 < 1.3. A beam shaping system made up of cylindrical lens is designed according to different sizes of the active medium in both directions, and a plane-plane cavity is used in the amplifier for high efficiency. At the absorbed pumping power of 174 W, the highest output power of 46 W is obtained with the slope efficiency of 29.5%. The beam quality factors M2 in both directions are measured to be 1.43 and 1.76, respectively.

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A 46-W laser diode stack end-pumped slab amplifier with a pulse duration of picoseconds

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