New approach for generation of narrow line laser pulses by the DFM of green pump and the Stokes seed in RTP crystals: excitation of 943-nm emission

摘要

We have demonstrated a very simple scheme to excite new lines in the near IR range via the DFM of 2nd harmonic of Nd:YLF laser and Stokes seed, in particular obtaining 943 nm emission. Energy efficiency for wave interaction in RTP crystal was equal to 27%. Being measured, nonlinear coefficient of Double Photon Absorption in this crystal showed 6 * 10~(-4) cm/MW.