结构参数对环形氙灯光效影响的实验研究

脉冲氙灯作为放大器的泵浦源，其泵浦效率直接影响放大器效率。环形氙灯被证明是一种有望提高泵浦效率, 并代替目前直管氙灯工作的新型氙灯。针对不同气压、不同结构的环形氙灯，通过实验研究了气压和内径对环形氙灯放电特性、光效特性以及爆炸特性的影响。结果表明，增加环形氙灯气压和内径可提高其光学效率，被泵浦钕玻璃的荧光最大可提高峰值22.3%，积分值15.7%。但是，增加气压和内径会降低环形氙灯的热负载能力。实验发现气压为26 664 Pa，内径为30 mm的环形氙灯拥有最佳光效并能通过寿命测试。

Experiment study of structure parameters influence on annular flash lamp radiation efficiency

As an important component of the amplifier, the flash lamp pumping efficiency directly affects the amplifier efficiency. Compared with the traditional flash lamp, the new structure flash lamp with a vacuum bubble inside (annular flash lamp) is proved having the advantage of higher radiation efficiency. This paper studies the influences of different pressures and structures on the annular flash lamps' discharge, radiation and explosion characteristics. Results indicate that increasing the pressure and internal diameter of annular flash lamp can improve the radiation efficiency. The fluorescence from the neodymium glass can be improved by 22.3% of peak value and 15.7% of integral value. However, increasing the pressure and internal diameter will deduce the thermal load limit. It is experimentally demonstrated that the annular flash lamp with 26 664 Pa and internal diameter 30 mm has the highest radiation efficiency and can pass lifetime test.