Considerations of a ship defense with a pulsed COIL

K. Takehisa

doi:10.1117/12.2197523

27 October 2015 Considerations of a ship defense with a pulsed COIL

K. Takehisa

Proceedings Volume 9650, Technologies for Optical Countermeasures XII; and High-Power Lasers 2015: Technology and Systems; 965003 (2015) https://doi.org/10.1117/12.2197523
Event: SPIE Security + Defence, 2015, Toulouse, France

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.

Citation Download Citation

K. Takehisa "Considerations of a ship defense with a pulsed COIL", Proc. SPIE 9650, Technologies for Optical Countermeasures XII; and High-Power Lasers 2015: Technology and Systems, 965003 (27 October 2015); https://doi.org/10.1117/12.2197523

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