Abstract: Space debris removal from the earth orbit is getting substantial attention since the International Space Station (ISS) construction started in the orbit. Because of its size and length of operation period, it is considered that the ISS has high probability of being hit by debris. There is a certain range of debris size where its detection and protection are very difficult. This paper describes use of space borne laser system to protect space assets against debris. It is proposed that the system utilizes phase conjugation phenomena (Brillouin Enhanced Four Wave Mixing or BEFWM in short) to focus high power laser radiation to debris with very high accuracy. Basic study has been conducted to investigate energy efficiency, phase conjugation fidelity and phase conjugation dynamics.!9
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