On the repetitive operation of a self-switched transversely excited atmosphere CO2 laser

Abstract

The repetition rate capability of self-switched transversely excited atmosphere (TEA) CO2 laser was studied for different gas flow configurations. For an optimized gas flow configuration, repetitive operation was achieved at a much smaller gas replenishment factor between two successive pulses when compared with repetitive systems energized by conventional pulsers.

Comparative study of spark pin-array and printed circuit board surface plasma pre-ionization systems for transversely excited atmospheric CO2 laser performance

“…Besides some * Author to whom any correspondence should be addressed. complicated considerations applied on the gas composition [1] as well as the discharge electrical circuit [2][3][4], these attempts have been mainly concerned with the main electrodes profile to enhance the uniform electric field within the electrodes space [5] and the pre-ionization methods in order to precondition the active medium gas [6]. Pre-ionization processes contribute very effectively to obtain a stable glow discharge by inducing a remarkable uniform electron density within the discharge volume prior to ignition of the main discharge.…”

Repetitive operation of switchless transverse flow transversely excited atmosphere CO2 lasers

“…This problem was overcome, albeit partially, in our previous work wherein near transverse flow was obtained through the discharge zone by making use of perforated electrodes and flowing the gas through them. 25 However, the maximum achievable repetition rate was limited here as the total inlet and the outlet area of the gas flow cannot be indefinitely increased. In this paper, we describe the repetitive operation of a switchless laser free from these drawbacks.…”