论文信息 - Surface damage mitigation of fused silica with CO2 laser

Surface damage mitigation of fused silica with CO2 laser

CO2 laser with 10.6μm wavelength radiate on damage with size below 80μm. Through examining with 351nm wavelength ultra-violet, it is found the larger damage size is, the lower extent of damage threshold is enhanced. During mitigation, thermal stress resulted from short interaction time and asymmetrical temperature distribution. Radial crack generates after damage and could expand if exposed to ultraviolet laser. After annealed in an oven for 9 hours, crack in the sample was eliminated.

[1] Michael D. Feit,et al. Growth of laser-initiated damage in fused silica at 351 nm , 2001, SPIE Laser Damage.

[2] Jiang Xiao-dong. Study of laser conditioning process for optical films , 2002 .

[3] Michel A. Josse,et al. Parametric study of the growth of damage sites on the rear surface of fused silica windows , 2003, SPIE Laser Damage.

[4] Annelise During,et al. Enhanced optical damage resistance of fused silica surfaces using UV laser conditioning and CO2 laser treatment , 2004, SPIE High-Power Laser Ablation.

[5] Gerard Raze,et al. The impact of laser damage on the lifetime of optical components in fusion lasers , 2004, SPIE Laser Damage.

[6] Richard P. Hackel,et al. Mitigation of laser damage growth in fused silica with a galvanometer scanned CO2 laser , 2005, SPIE Laser Damage.

[7] Annelise During,et al. Integrated facility of UV and IR laser process to enhance laser damage resistance of large scale 3w optics , 2005, SPIE Laser Damage.

[8] Richard P. Hackel,et al. Mitigation of Laser Damage Growth in Fused Silica NIF Optics with a Galvanometer Scanned Carbon Dioxide Laser , 2006 .

[9] Zhao Songnan,et al. Applications of CO_2 Laser Treatment in Optical Surface , 2006 .