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Development of a narrow-band, tunable, frequency-quadrupled diode laser for UV absorption spectroscopy

机译:开发用于紫外吸收光谱的窄带,可调谐,频率四倍的二极管激光器

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摘要

A compact, lightweight, low-power-consumption source of tunable, narrow-bandwidth blue and UV radiation is described. In this source, a single-longitudinal-mode diode laser seeds a pulsed, GaAlAs tapered amplifier whose similar to 860-nm output is frequency quadrupled by two stages of single-pass frequency doubling. Performance of the laser system is characterized over a wide range of amplifier duty cycles (0.1-1.0), pulse durations (50 ns-1.0 mu s), peak currents (less than or equal to 14 A), and average currents (less than or equal to 2.0 A). The capabilities and limitations of this source are discussed. We recorded high-resolution, Doppler-limited absorption spectra of nitric oxide and sulfur dioxide near 215 MI; the SO2 spectrum was found to have significantly more structure and higher peak absorption cross sections than previously reported. (C) 1998 Optical Society of America. [References: 31]
机译:描述了一种紧凑,轻便,低功耗的可调,窄带宽蓝色和紫外线辐射源。在这种光源中,单纵模二极管激光器植入了一个脉冲式GaAlAs锥形放大器,该放大器的输出类似于860 nm,是两级单通倍频的四倍。激光器系统的性能表现在很宽的放大器占空比(0.1-1.0),脉冲持续时间(50 ns-1.0μs),峰值电流(小于或等于14 A)和平均电流(小于或等于2.0 A)。讨论了此来源的功能和局限性。我们记录了215 MI附近的一氧化氮和二氧化硫的高分辨率,多普勒极限吸收光谱;发现SO2光谱比以前报道的具有更多的结构和更高的峰吸收截面。 (C)1998年美国眼镜学会。 [参考:31]

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