Laser-induced damage in fused silica under multi-wavelength simultaneous laser irradiation

Rong Qiu; Yong Jiang; Decheng Guo; Jinfang Shi; Cui Li; Cheng Ye; Qiang Zhou; Wei Han; Jin Huang

doi:10.11884/HPLPB202032.190479

Journals >High Power Laser and Particle Beams >Volume 32 >Issue 1 >Page 011011 > Article

High Power Laser and Particle Beams
Vol. 32, Issue 1, 011011 (2020)

Laser-induced damage in fused silica under multi-wavelength simultaneous laser irradiation

Rong Qiu^1、2, Yong Jiang^1、2, Decheng Guo^1、2, Jinfang Shi^1、3, Cui Li^1、3, Cheng Ye¹, Qiang Zhou¹, Wei Han⁴, and Jin Huang⁴

Author Affiliations

¹Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621900, China

²Sichuan Civil-military Integration Institute, Mianyang 621900, China

³Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, China

⁴Research Center of Laser Fusion, CAEP, P. O. Box 919-988, Mianyang 621900, China

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DOI: 10.11884/HPLPB202032.190479 Cite this Article

Rong Qiu, Yong Jiang, Decheng Guo, Jinfang Shi, Cui Li, Cheng Ye, Qiang Zhou, Wei Han, Jin Huang. Laser-induced damage in fused silica under multi-wavelength simultaneous laser irradiation[J]. High Power Laser and Particle Beams, 2020, 32(1): 011011 Copy Citation Text

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Fig. 1. Schematic diagram of shock wave velocity measurement based on double femtosecond pulse

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Fig. 2. Typical shadow images of rear-surface damage based on double wavelength femtosecond laser

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wavelengths	energy density/(J·cm⁻²)	damage probability/%	wavelengths	energy density/(J·cm⁻²)	damage probability/%
3ω＋2ω	17＋3	0	3ω＋1ω	17＋5	0
	17＋6	0		17＋10	3
	17＋9	2		17＋15	4.5
	17＋12	5.5		17＋20	6
	20.5＋3	7		20.5＋5	4.5
	20.5＋6	5		20.5＋10	4
	20.5＋9	1.5		20.5＋15	3
	20.5＋12	3.5		20.5＋20	8.5
	24＋3	3		24＋5	5
	24＋6	8		24＋10	7
	24＋9	10		24＋15	8
	24＋12	12		24＋20	14
	27.5＋3	31		-	-

Table 1. Damage probability of fused silica irradiated by dual wavelength laser

wavelengths	energy density/(J·cm⁻²)	damage probability/%	average area/μm²
3ω	20.5	1.5	2 043
	24	4	3 180
	30.5	28	4 565
	31	33.5	4 737
	33	47	6 455
3ω＋2ω	20.5＋3	4	2 105
	20.5＋6	5	2 517
	20.5＋9	1.5	4 029
	20.5＋12	3.5	5 134
3ω＋1ω	20.5＋5	4.5	1 903
	20.5＋10	4	2 480
	20.5＋15	3	2 507
	20.5＋20	8.5	3 701

Table 2. Influence of 2ω and 1ω wavelengths on damage probability and damage degree

No.	3ω energy density/(J·cm⁻²)	2ω energy density/(J·cm⁻²)	damage growth probability/%
1	4.4	2.4	0
2	5	0	0
3	5	1.2	0
4	5	2.4	5
5	6	0	0
6	6	1.2	11
7	6	2.4	17
8	6.5	0	13
9	6.5	1.2	18
10	6.5	2.4	26

Table 3. Damage growth probability of fused silica irradiated by 3ω and 2ω simultaneously

No.	3ω energy density/(J·cm⁻²)	1ω energy density/(J·cm⁻²)	damage growth probability/%
1	4.4	2.4	0
2	5	0	0
3	5	1.2	0
4	5	2.4	0
5	6	0	0
6	6	1.2	0
7	6	2.4	7
8	6	3.6	12
9	6.5	0	10
10	6.5	1.2	14
11	6.5	2.4	20

Table 4. Damage growth probability of fused silica irradiated by 3ω and 1ω simultaneously

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