Stabilization of the CO/sub 2/ laser power by feedback controlling through an auxiliary electrode

Journal Article · Sat Apr 01 04:00:00 EST 1989 · IEEE (Institute of Electrical and Electronics Engineers) Transactions on Instrumentation and Measurement; (USA)

DOI:https://doi.org/10.1109/19.192346· OSTI ID:5169249

Shin, D J; Chung, Y B; Lee, T W ^[1]

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1. Korea Standards Research Institute, Taedok Science Town, Taejon, Chungnam (KR)

The authors discuss the output power of the CW CO/sub 2/ laser stabilized by the feedback control of the electrical discharge through an auxiliary electrode. The laser output is monitored by a HgCdTe detector, and to suppress the output fluctuations, the variable voltage is applied to the auxiliary electrode located near the grounded cathode. With this stabilization technique, the output power fluctuation is reduced to about one-tenth of that without the stabilization. The merit of this technique is that the auxiliary discharge is achieved in the very low voltage and current level compared with the main discharge.

• OSTI ID: 5169249
• Journal Information: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Instrumentation and Measurement; (USA), Journal Name: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Instrumentation and Measurement; (USA) Vol. 38:2; ISSN IEIMA; ISSN 0018-9456
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
CADMIUM COMPOUNDS
CADMIUM TELLURIDES
CARBON DIOXIDE LASERS
CHALCOGENIDES
CONTROL
ELECTRIC DISCHARGES
ELECTRODES
FEEDBACK
FREQUENCY CONTROL
GAS LASERS
LASERS
MERCURY COMPOUNDS
MERCURY TELLURIDES
MONITORING
STABILIZATION
TELLURIDES
TELLURIUM COMPOUNDS