E. Jaatinen et B. Lutherdavies, CONVERTING 10-KW MULTIMODE FIELDS INTO A SINGLE SPATIAL MODE WITH A SEMILINEAR PHASE-CONJUGATE MIRROR, International journal of nonlinear optical physics, 3(1), 1994, pp. 117-125
We report on the use of a semilinear phase conjugate mirror to convert
20% of the power contained in the 10 kW 20 ns pulses emerging from a
multi-mode fibre back into a single spatial mode. This use of a phase
conjugate mirror to unscramble phase distortions is unusual as only a
single pass of the phase aberrating object is required. We also discus
s the limitations of the technique that were encountered at high inten
sities (MW/cm(2)).