Investigation of a versatile pulsed laser source based on a diode seed and ultra-high gain bounce geometry amplifiers.
Investigation of a versatile pulsed laser source based on a diode seed and ultra-high gain bounce geometry amplifiers.
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DOI：
10.1364/oe.23.012328
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发表时间：
2015-05
期刊：
影响因子：
3.8
通讯作者：
A. Teppitaksak;G. Thomas;M. Damzen
中科院分区：
文献类型：
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作者：
A. Teppitaksak;G. Thomas;M. Damzen
我们提出了一个多功能的脉冲激光源，使用低功率，增益开关二极管激光器与独立可变的重复频率和脉冲持续时间种子超高增益Nd：YVO 4反弹几何放大器系统在1064 nm的调查。在仅24 W泵浦的反弹几何前置放大器中，小信号增益高达50 dB，并且良好地保持了TEM 00光束质量。单个放大器被证明是有限的放大自发辐射。研究了采用第二功率放大器进一步放大的方法，在188μW的脉冲二极管种子输入下，获得了~ 14 W的平均输出功率。这项研究提供了一些指导方针，使用反弹放大器，以获得灵活的脉冲放大的低功率种子源，以达到科学和商业上有用的功率水平。
We present an investigation of a versatile pulsed laser source using a low power, gain-switched diode laser with independently variable repetition rate and pulse duration to seed an ultra-high gain Nd:YVO4 bounce geometry amplifier system at 1064nm. Small-signal gain as high as 50dB was demonstrated in a bounce geometry pre-amplifier from just 24W pumping, with good preservation of TEM00 beam quality. The single amplifier is shown to be limited by amplified spontaneous emission. Study is made of further scaling with a second power amplifier, achieving average output power of ~14W for a pulsed diode seed input of 188μW. This investigation provides some guidelines for using the bounce amplifier to obtain flexible pulse amplification of low-power seed sources to reach scientifically and commercially useful power levels.