Transient optical properties in fused silica measured by time-resolved high-power laser photometer

Zhen Cao; Hongbo He; Guohang Hu; Yuanan Zhao; Liujiang Yang; Jianda Shao

doi:10.3788/COL201917.051601

Journals >Chinese Optics Letters >Volume 17 >Issue 5 >Page 051601 > Article

Chinese Optics Letters
Vol. 17, Issue 5, 051601 (2019)

Transient optical properties in fused silica measured by time-resolved high-power laser photometer

Zhen Cao^1、2、3, Hongbo He^1、3、*, Guohang Hu^1、3、**, Yuanan Zhao^1、3, Liujiang Yang^1、3, and Jianda Shao^1、3

Author Affiliations

¹Laboratory of Thin Film Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

²Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

³Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

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DOI: 10.3788/COL201917.051601 Cite this Article Set citation alerts

Zhen Cao, Hongbo He, Guohang Hu, Yuanan Zhao, Liujiang Yang, Jianda Shao. Transient optical properties in fused silica measured by time-resolved high-power laser photometer[J]. Chinese Optics Letters, 2019, 17(5): 051601 Copy Citation Text

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Schematic of the time-resolved photometer: λ/2, half-wave plate; λ/4, quarter-wave plate; D1/D2/D3/D4, photodiode detectors.

Fig. 1. Schematic of the time-resolved photometer:

λ / 2

, half-wave plate;

λ / 4

, quarter-wave plate; D1/D2/D3/D4, photodiode detectors.

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While the laser intensity was 37 GW/cm2, (a) the time-resolved signal variations and (b) the variations of the optical properties during the irradiation.

Fig. 2. While the laser intensity was

37 GW / {cm}^{2}

, (a) the time-resolved signal variations and (b) the variations of the optical properties during the irradiation.

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Fig. 3. While the laser intensity was

118 GW / {cm}^{2}

, (a) the time-resolved signal variations and (b) the variations of the optical properties during the irradiation.

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Fig. 4. While the laser intensity was

232 GW / {cm}^{2}

, (a) the time-resolved signal variations and (b) the variations of the optical properties during the irradiation.

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Fig. 5. (a) Broadband emission spectrum associated with the damaged fused silica. (b) Plasma emission image integrated for 500 μs. (c) The optical microscopy image of the damage site.

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Fig. 6. (a) Reflected energy and energy loss [with subtracted surface loss (