Frequency-stable lasers have many applications, including interferometric measurements and sensors, coherent optical communication, and high-resolution spectroscopy. The 13C2H2 P(16) (ν1+ ν3) absorption line at 1542.3837 nm is the preferred frequency reference in the telecommunication band due to a relatively large linestrength. Applications of highly stable lasers outside the research laboratories are often hampered by the complexity of the setup. With a recently developed simple and compact acetylene stabilized fibre laser [1] we obtained a shot-term relative frequency instability of 5.0×10−13(τ /s)−ν for averaging times τ up to 100 s (see Fig. 1), and a relative repeatability over 11 weeks of 4.3×10−13. This laser uses a 21 cm long bulk gas cell, and replacing this cell with a gas-filled hollow-core photonic bandgap fibre may reduce the complexity and the size of the laser setup even further.
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机译：频率稳定的激光器具有许多应用，包括干涉测量和传感器，相干光通信和高分辨率光谱学。 13 C 2 H 2 P（16）（ν 1 +ν 3 ）1542.3837 nm处的吸收线是电信频段中的首选频率参考，这是因为其线强度较大。研究实验室之外的高稳定度激光器的应用通常会因设置的复杂性而受阻。利用最近开发的简单紧凑的乙炔稳定光纤激光器[1]，我们获得了射击期相对频率不稳定性5.0×10 −13 （τ/ s）-ν平均时间τ最长可达100 s（见图1），在11周内的相对重复性为4.3×10 -13 。该激光器使用21厘米长的大型气室，用充气的空心光子带隙光纤代替该气室可以进一步降低激光器的复杂性和尺寸。
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