Repetitive operation of a helium-free mini TEA CO2 laser

Gain measurements of longitudinally excited CO2 laser using low-pressure gas without helium

“…The development of a He-free CO 2 laser is thus important. He-free TE CO 2 lasers that operate at repetition rates up to 100 Hz have been reported [20][21][22][23][24]. In the paper reporting 100 Hz operation, a pair of cylindrical electrodes had a length of 80 mm, a width of 15 mm and a discharge gap of 3 mm [20].…”

“…He-free TE CO 2 lasers that operate at repetition rates up to 100 Hz have been reported [20][21][22][23][24]. In the paper reporting 100 Hz operation, a pair of cylindrical electrodes had a length of 80 mm, a width of 15 mm and a discharge gap of 3 mm [20]. The discharge volume was 3.6 cm 3 and pre-ionization system was used.…”

Performance of a surface corona preionized mini-TEA CO2 laser

“…One important factor in achieving efficient operation of a TEA CO 2 laser is designing an effective pre-ionization system for the discharge volume [12]. Several techniques have been employed for pre-ionization in TEA CO 2 lasers, but the most common technique is photo-ionization by UV radiation generated by auxiliary spark discharges [13,14]. In this technique arrays of spark gaps are arranged next to the discharge electrodes which, when fired prior to the application * Author to whom any correspondence should be addressed.…”