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LD端面抽运Nd:YAG 1319/1338nm双波长激光器研究

刘 欢 姚建铨 郑芳华 路 洋 王 鹏

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LD端面抽运Nd:YAG 1319/1338nm双波长激光器研究

刘 欢, 姚建铨, 郑芳华, 路 洋, 王 鹏

A dual-wavelength diode-end-pumped Nd:YAG laser operating simultaneously at 1319 and 1338nm

Liu Huan, Yao Jian-Quan, Zheng Fang-Hua, Lu Yang, Wang Peng
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  • 从LD端面抽运固体激光器的激光阈值公式出发,建立了双波长激光同时振荡的阈值条件,理论计算了腔镜对于两个波长的透过率关系,实现了LD端面抽运Nd:YAG 1319nm/1338nm双波长激光连续和准连续输出.双波长激光连续输出功率可达6W,斜效率为30%;准连续输出功率在重复频率50kHz时可达4.75W,斜效率为24.73%,脉冲宽度为55.05ns;腔内插入布儒斯特片,在重复频率为50kHz时,双波长激光准连续线偏振输出功率可达2.22W,不稳定性小于0.52%,M2
    Based on the lasing threshold equation of a diode-end-pumped Nd:YAG laser, the threshold condition of simultaneous dual-wavelength lasing is determined and the relationship between the transmission ratios of the output mirror corresponding to the two wavelengths is calculated. A simultaneous dual-wavelength continuous wave (cw) or quasi-cw diode-end-pumped Nd:YAG laser operating at 1319nm and 1338nm has been demonstrated. A total cw output power of 6W was achieved at a pump power of 21.6W with a slope efficiency of 30%. And a total quasi-cw output power of 4.75W was obtained at a pump power of 21.6W and a pulse repetition rate of 50kHz, with a slope efficiency of 24.73%, and the corresponding pulse width was 55.05ns. Inserting a Brewster plate in the cavity and the highest linearly polarized wave output power was boosted up to 2.22W at a pulse repetition rate of 50kHz. The instability of the output power was less than 0.52% and the beam quality M2 factor was as low as 1.16 at the linearly polarized wave output power of 2.17W. The simultaneous dual-wavelength laser provides an experimental basis for generating highly coherent terahertz wave radiation of 3.23THz by nonlinear optical difference frequency method.
    • 基金项目: 国家自然科学基金(批准号:10474071)和教育部博士点基金(批准号:20040056010)资助的课题.
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  • 文章访问数:  6593
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  • 被引次数: 0
出版历程
  • 收稿日期:  2007-03-15
  • 修回日期:  2007-05-15
  • 刊出日期:  2008-01-15

LD端面抽运Nd:YAG 1319/1338nm双波长激光器研究

  • 1. 天津大学精仪学院激光与光电子研究所,天津 300072;教育部光电信息技术科学重点实验室,天津 300072
    基金项目: 国家自然科学基金(批准号:10474071)和教育部博士点基金(批准号:20040056010)资助的课题.

摘要: 从LD端面抽运固体激光器的激光阈值公式出发,建立了双波长激光同时振荡的阈值条件,理论计算了腔镜对于两个波长的透过率关系,实现了LD端面抽运Nd:YAG 1319nm/1338nm双波长激光连续和准连续输出.双波长激光连续输出功率可达6W,斜效率为30%;准连续输出功率在重复频率50kHz时可达4.75W,斜效率为24.73%,脉冲宽度为55.05ns;腔内插入布儒斯特片,在重复频率为50kHz时,双波长激光准连续线偏振输出功率可达2.22W,不稳定性小于0.52%,M2

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