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Proceedings Paper

Considerations of a ship defense with a pulsed COIL
Author(s): K. Takehisa
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Paper Abstract

Ship defense system with a pulsed COIL (Chemical Oxygen-Iodine Laser) has been considered. One of the greatest threats for battle ships and carriers in warfare are supersonic anti-ship cruise missiles (ASCMs). A countermeasure is considered to be a supersonic RAM (Rolling Airframe Missile) at first. A gun-type CIWS (Close-In Weapon System) should be used as the last line of defense. However since an ASCM can be detected at only 30-50km away due to radar horizon, a speed-of-light weapon is desirable as the first defense especially if the ASCM flies at >Mach 6. Our previous report explained several advantages of a giant pulse from a chemical oxygen laser (COL) to shoot down supersonic aircrafts. Since the first defense has the target distance of ~30km, the use of COIL is better considering its beam having high transmissivity in air. Therefore efficient operation of a giant-pulsed COIL has been investigated with rate-equation simulations. The simulation results indicate that efficient single-pass amplification can be expected. Also a design example of a giant-pulsed COIL MOPA (master oscillator and power amplifier) system has been shown, in which the output energy can be increased without limit.

Paper Details

Date Published: 27 October 2015
PDF: 12 pages
Proc. SPIE 9650, Technologies for Optical Countermeasures XII; and High-Power Lasers 2015: Technology and Systems, 965003 (27 October 2015); doi: 10.1117/12.2197523
Show Author Affiliations
K. Takehisa, O2 Laser Lab. (Japan)


Published in SPIE Proceedings Vol. 9650:
Technologies for Optical Countermeasures XII; and High-Power Lasers 2015: Technology and Systems
David H. Titterton; Harro Ackermann; Willy L. Bohn; Robert J. Grasso; Mark A. Richardson, Editor(s)

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