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Sub-Doppler resolution near-infrared spectroscopy at 1.28 mu m with the noise-immune cavity-enhanced optical heterodyne molecular spectroscopy method

机译:副红外光谱近红外光谱,噪声免疫腔增强光学外差分子谱法为1.28μm

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摘要

We report on the sub-Doppler saturation spectroscopy of the nitrous oxide (N2O) overtone transition at 1.28 mu m. This measurement is performed by the noise-immune cavity-enhanced optical heterodyne molecular spectroscopy technique based on the quantum-dot (QD) laser. A high intra-cavity power, up to 10 W, reaches the saturation limit of the overtone line using an optical cavity with a high finesse of 1.14(5) x 10(5). At a pressure of several mTorr, the saturation dip is observed with a full width at half-maximum of about 2 MHz and a signal-to-noise ratio of 71. To the best of our knowledge, this is the first saturation spectroscopy of molecular overtone transitions in the 1.3 mu m region. The QD laser is then locked to this dispersion signal with a stability of 15 kHz at 1 s integration time. We demonstrate the potential of the N2O as a marker because of its particularly rich spectrum at the vicinity of 1.28-1.30 mu m where there are several important forbidden transitions of atomic parity violation measurements and the 1.3 mu m O-band of optical communication. (C) 2017 Optical Society of America.
机译:我们报道了氧化亚氮(N2O)的亚多普勒饱和光谱(N2O)泛孔过渡在1.28μm。该测量由基于量子点(QD)激光的噪声免疫腔增强的光学外差分子分子谱技术进行。高达10W的高腔电力高达10W,使用光学腔达到泛孔线的饱和极限,具有1.14(5)×10(5)的高精度。在几MTORR的压力下,饱和度倾斜以大约2MHz的半最大值和71的信噪比,饱和度垂直观察到。据我们所知,这是分子的第一个饱和光谱在1.3亩地区泛音过渡。然后,QD激光器锁定在该分散信号中,在1秒的整合时间下稳定为15 kHz。我们证明了N2O作为标记的潜力,因为它在1.28-1.30亩的附近特别丰富的光谱,其中有几个重要的禁止发生原子奇校长违规测量和光学通信的1.3μmo带。 (c)2017年光学学会。

著录项

  • 来源
    《Optics Letters》 |2017年第13期|共4页
  • 作者

    Chen Tzu-Ling; Liu Yi-Wei;

  • 作者单位

    Natl Tsing Hua Univ Dept Phys Hsinchu 30013 Taiwan;

    Natl Tsing Hua Univ Dept Phys Hsinchu 30013 Taiwan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
  • 关键词

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