20TW超短脉冲激光装置的研制
Design and characterization of 20TW Ti:sapphire laser system
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摘要: 介绍了基于啁啾脉冲放大技术的20TW全钛宝石超短脉冲激光装置的研制。该装置的主放大器采用全像传递的空间四程放大构型，可以保持良好的近场分布和提高能量转换效率。主放大器的钛宝石晶体为30mm×15mm，6台调Q倍频的YAG激光器泵浦。压缩后脉宽50fs，能量1J，峰值功率可达20TW，聚焦功率大于3×1018W/cm2。Abstract: The design and characterization of a Ti:sapphire highintensity laser system is presented. A spatial fourpass imagedelayed amplifier, which can output good quality beam, is employed in the system. The system is demonstrated in order to reach the intensity in excess of 3×1018W/cm2 for ultraintensity field experiments. In order to decrease the effects of gain narrowing, an acoustooptic programmable dispersive filter is applied after the femtosecond oscillator.
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Key words:
- ti:sapphire /
- chirped pulse amplification /
- peak power /
- imagedelayed /
- transforming efficiency /
- filter
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