Fig. 1. The experimentally measured (a) spectra and (b) temporal waveforms of each incident laser; (c) simulation of spike structures of different bandwidths; (d) the LIDT test results. The damage probabilities were obtained by 10 shots for one fluence step. The error bars were derived from the deviation in the damage probability at each incident fluence after five LIDT tests.

Fig. 2. Simulation results of the self-focusing effect for each bandwidth.

Fig. 3. The results of z-scans of the SLM laser and the LTCLs with each bandwidth. The curves are the simulation results, and the dots correspond to the experimental results.

Fig. 4. The results of transmission signal variation by the time-resolved test method: (a) schematic diagram of the filamentary damage; (b) the test result of the SLM laser and the LTCLs with each bandwidth.

Fig. 5. The damage morphologies of the fused silica for each incident laser: (a) integral filamentation damage captured by the CCD camera; (b) head damage morphologies of filamentation damage captured by the microscope.