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Pulsed laser based on a resonance—metastable level transition in mercury ion

机译：基于共振的汞-离子中的可跃迁能级跃迁的脉冲激光

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The method of doubled pulses was used to achieve pulsed lasing due to the 5d~(10)6p~2P9_(3/2)—5d~96s~2 ~2D_(5/2) transition in the mercury ion (λ = 398 nm), similar to efficient lasing transitions in copper and gold atoms. Discharge tubes with inner diameters 4 and 8 mm and 30 cm long were used. They were filled with neon or helium as the buffer gases. There was a significant difference between lasing in the narrow and wide tubes. In the wide tube it was possible to observe lasing only when the delay between the pulses was short; the beam was not ring-shaped, contrary to what was found earlier for the narrow tube. Lasing was observed even when the delay between the two pulses was less than 5 ms, but lasing disappeared when heating of the tube became stronger as the pulse repetition frequency was increased. Possible population and inversion mechanisms were analysed.
机译：由于汞离子中的5d〜（10）6p〜2P9_（3/2）—5d〜96s〜2〜2D_（5/2）跃迁（λ= 398 nm），所以使用双脉冲方法来实现脉冲激射），类似于铜和金原子中的有效激光跃迁。使用内径为4、8 mm和30 cm长的放电管。它们充满了氖气或氦气作为缓冲气体。在窄管和宽管中发射激光之间存在显着差异。在宽管中，只有在脉冲之间的延迟很短时才可能观察到激光。光束不是环形的，这与之前在窄管中发现的相反。即使在两个脉冲之间的延迟小于5 ms时也观察到激光，但随着脉冲重复频率的增加，当加热管变得更强时，激光消失。分析了可能的种群和反转机制。

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