Performance characteristics of a high-pressure pulsed singlet oxygen generator

Endo, Masamori; Kodama, K.; Handa, Y.; Uchiyama, Taro

doi:10.1063/1.350469

Cited by 10 publications

(4 citation statements)

References 21 publications

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“…Where specific surface area means the ratio of the total surface area of BHP jets in the reaction zone to the volume of the reaction zone. Singlet oxygen partial pressure was estimated from the M. Endo 16. Figure 2 shows the schematic drawing of the experimental setup.…”

Section: Optimization Of Singlet Oxygen Generatormentioning

confidence: 99%

Development of the industrial COIL

et al. 1998

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Section: Optimization Of Singlet Oxygen Generatormentioning

confidence: 99%

Development of the industrial COIL

et al. 1998

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“…The ratio between the output signal and the intensity of the emission was calculated analytically by the method described in Ref. 2. The peak intensity of the red emission was measured to be 1.0 x 10-2 W/cm3.…”

Section: Conditions To Produce the Bright Red Emissionmentioning

confidence: 99%

<title>Study of red emission accompanied by the pulsed chemical iodine laser</title>

et al. 1993

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Intense red emission was observed occasionally when a pulsed chemical oxygen-iodine laser was operated. The intensity of this emission was at least 100 times higher than any known emission of the oxygen-iodine system. The time history of the emission intensity indicated that it was pumped by the iodine laser. It seemed to be that the rust of the iodine injector was closely related to this emission. The decay time of the emission was measured to be 2-4 ms. The spectroscopic measurement revealed that the emission was identical with one that was found by Yoshida e al. and is being studied widely for a new candidate of a visible chemical laser.

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“…7,8) In 1985-1995, Uchiyama et al developed an experimental laser apparatus using chemically generated O 2 ( 1 Δ g ). 1,[9][10][11] A laser oscillator with a 6-m cavity was developed using a high-pressure O 2 ( 1 Δ g ) generator (SOG) 12,13) Unfortunately laser oscillation was not successful due to the scattering losses by water aerosols which are transported from the SOG and/or formed from transported water vapor. 1), 11) Another reason was that the cavity was not long enough considering other optical losses.…”

Section: Introductionmentioning

confidence: 99%

New concepts of realizing a chemical oxygen laser

Takehisa¹

2014

SPIE Proceedings

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New concepts are presented to realize a chemical oxygen laser (COL) based on the transition from O 2 ( 1 Δ g ) to O 2 ( 3 Σ g ).The chemical oxygen iodine laser (COIL) utilizes the energy transfer from the chemically generated O 2 ( 1 Δ g ) to iodine I ( 2 P 3/2 ) because the stimulated emission cross section of O 2 ( 1 Δ g ) is too small to give a direct oscillation. But since extractable laser energy has no relation to the stimulated emission cross section, a COL has a potential to produce a high energy laser output if it has a long enough active medium to give a positive gain. The intrinsically long upper-state life time enables the storage of large energy, which has a potential give a giant pulsed laser. Since the previous report elucidated the problems 1) , the proposed concepts are based on the consideration of them. Also a Q switched COL oscillator is simulated with a rate equation. The simulation results show that a giant pulse of ~0.05ms width can be obtained with the extraction efficiency of 10-20%.

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Performance characteristics of a high-pressure pulsed singlet oxygen generator

Cited by 10 publications

References 21 publications

Development of the industrial COIL

Development of the industrial COIL

<title>Study of red emission accompanied by the pulsed chemical iodine laser</title>

New concepts of realizing a chemical oxygen laser

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