A real tim e and in situ recording fixing m ethod after heating w ith C O2 laserbeam s is suggested to therm ally fix a sm all local hologram in a bulk of Fev Li Nb O3 photore fractive crystal.

• 提出用 C O2 激光加热后记录固定的方案对 Li Nb O3 晶体中的全息进行实时实地局域热固定。