Dopant addition KTP and that same class configuration which show the high birefringence factor where it was suited for II die phase matching

摘要

(57) Abstract It is this, Fe and Nb and/or the Ta dopant at least is manner and the device which do wavelength conversion, making use of II die phase matching the tonnage of approximately 100ppm altogether, but approximately 0.001 makes high at least the n _{zn x} optical birefringence factor which the crystal which adds this dopant shows by comparison with the crystal which has not added the above-mentioned dopant the dopant addition MTiOXO which is included at the tonnage which is effective₄ [here, M K and to be Rb and/or Tl, and as for X, it is P and/or As] from by using the crystal which becomes essentiallyIt is characterized. The fact that the printout wave which shows the optical birefringence factor which is higher than the maximum optical birefringence factor which the crystal which has not added this dopant shows and is suitable is made to cause is disclosed. During effective crystal, there is the crystal which becomes from the dopant addition MTiOXO_{4 which} approximately 100ppm includes Ta at least essentially.