The research on discharge oxygen iodine laser in Japan

Hiroo Fujii; Yoshihumi Kihara; Ryota Funakoshi; Minoru Okamura; Josef Schmiedberger

doi:10.1117/12.541475

20 September 2004 The research on discharge oxygen iodine laser in Japan

Hiroo Fujii, Yoshihumi Kihara, Ryota Funakoshi, Minoru Okamura, Josef Schmiedberger

Proceedings Volume 5448, High-Power Laser Ablation V; (2004) https://doi.org/10.1117/12.541475
Event: High-Power Laser Ablation, 2004, Taos, New Mexico, United States

Abstract

A decade has passed, since Discharge Oxygen Iodine Laser (DOIL) research started in our laboratory. Singlet delta oxygen production tests were carried out using RF discharge singlet oxygen generator of the first version (DSOG-1) in 1993. The maximum yield of 4.2% was achieved by DSOG-1. Efforts for improving RF-DSOG have been continuously carrying on and DSOG-5 is now under operation. The DSOG-5 consists of a jet nozzle having a diameter of 3 mm, an injector quarts nozzle of 2 mm diameter set inside the jet nozzle at coaxial position and a mixing slit nozzle with the height of 0.2 mm set surrounding the jet nozzle exit. High electric field is laid on inside surface of the jet nozzle by 200 W RF power source. The singlet delta oxygen is produced by energy transfer from Argon plasma which is produced in the jet nozzle. It is important for achieving high yield to have a good mixing of oxygen, blown from the slit nozzle and the quarts nozzle, with the Argon plasma. The yield of 24% was recorded when oxygen gas 110 sccm was mixed with 700 sccm Argon gas at the pressure 0.6 torr and the RF power 196 W. With a new laser system reinforced by a discharge iodine dissociation and a laser gas cooling device, oscillation tests were carried out in conjunction with the DSOG-5. Performance of the system was confirmed by an emission from excited iodine atoms which energy was transferred from the singlet delta oxygen. It is obvious that the new system gives a progress for the DOIL oscillation.

Citation Download Citation

Hiroo Fujii, Yoshihumi Kihara, Ryota Funakoshi, Minoru Okamura, and Josef Schmiedberger "The research on discharge oxygen iodine laser in Japan", Proc. SPIE 5448, High-Power Laser Ablation V, (20 September 2004); https://doi.org/10.1117/12.541475

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available