Preionizer-induced pulsed-mode operation of a transverse-flow transversely excited CW CO{sub 2} laser

Journal Article · Thu Aug 01 04:00:00 EDT 1996 · IEEE Journal of Quantum Electronics

DOI:https://doi.org/10.1109/3.511542· OSTI ID:376059

Choudhary, P; Nath, A K ^[1]; Agarwal, M S ^[2]

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1. Centre for Advanced Technology, Indore (India). Laser Div.
2. Indian Inst. of Tech., Bombay (India). Dept. of Electrical Engineering

A pulse-preionized, dc-excited, transverse-flow, CW CO{sub 2} laser has been operated in pulsed mode without using a discharge power-switching scheme. The pulsation in laser power is produced by a pulsed current that flows from the dc power supply due to the collapse in the discharge impedance whenever a preionizer pulse appears. By properly choosing the preionizer-pulse repetition frequency, dc power-supply filter-capacitor value, and gas composition, the laser pulsation has been enhanced. This laser has been operated at 1-kW average laser power level in pulsed mode at 1.3-kHz pulse repetition frequency with a peak-to-average power ratio of 3.35 and laser-power modulation depth of almost 100%.

• OSTI ID: 376059
• Journal Information: IEEE Journal of Quantum Electronics, Journal Name: IEEE Journal of Quantum Electronics Journal Issue: 8 Vol. 32; ISSN 0018-9197; ISSN IEJQA7
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CARBON DIOXIDE LASERS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTROMAGNETIC PULSES
EXPERIMENTAL DATA
IONIZATION
OPERATION
POWER SUPPLIES