Fig. 1. Model for finite element analysis

Fig. 2. Changes in neodymium glass. (a) Light field intensity; (b) ionization rate

Fig. 3. Variation of free electron density in neodymium glass

Fig. 4. Influence of pulse width on damage properties of material. (a) Damage threshold; (b) damage point location

Fig. 5. Influence of different pump power density on neodymium glass. (a) Small signal gain; (b) free electron density

Fig. 6. Surface stress distribution of neodymium glass

Fig. 7. Effect of strain on end-face of neodymium glass. (a) Distortion of light field distribution (pump power density is 1×103W/cm2);(b) maximum light field intensity under different pump power density modulation

Fig. 8. Damage result inside neodymium glass at maximum light field value incidence after modulation