Small space debris removal using phase conjugate light (PCL) was proposed. Required PCL energy for deorbiting debris rotating in the low-earth orbit was estimated to be several kilojoules. A flash-lamp pumped Nd:YAG resonator was used as a phase conjugator to achieve a simple-structured, all-optical debris tracking and pointing system. PCL generation was succeeded and its time-reversal property was demonstrated. Introducing MOPA system was discussed to be an effective way to increase PCL energy without losing beam quality.
2016 The Japan Society for Aeronautical and Space Sciences