Solid-state green-light-emitting upconversion coherent random laser in macroporous LiNbO<sub>3</sub>:Er

Fan Shi; Meng Zhao; Chen Jia; Yufeng Zhao; Shengyong Chen

doi:doi:10.3788/COL201816.011403

Chinese Optics Letters, 2018, 16 (1): 011403, Published Online: Jul. 17, 2018

Solid-state green-light-emitting upconversion coherent random laser in macroporous LiNbO₃:Er

Fan Shi Meng Zhao Chen Jia Yufeng Zhao Shengyong Chen ^*

Author Affiliations

Key Laboratory of Computer Vision and System of Ministry of Education, Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology, Tianjin University of Technology, Tianjin 300384, China

Figures & Tables

Fig. 1. Emission spectra of the macroporous LN:Er sample at different excitation intensities (30 and 70 kW/cm2, inclination angle: 30°). The inset is an AFM image of the sample.

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Fig. 2. Integrated emission intensity as a function of the excitation intensity on a log-log scale for (a) macroporous and (b) bulk LN:Er. The intensities were integrated from 520 to 570 nm (green-light-emission band). Solid lines are the pertinent linear fits.

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Fig. 3. Emission spectrum of macroporous LN:Er at 20° from the sample surface (pump intensity: 70 kW/cm2).

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Fig. 4. Energy levels of Er3+ showing the ESA and ETU pathways under pumping by a 980 nm.

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Fan Shi, Meng Zhao, Chen Jia, Yufeng Zhao, Shengyong Chen. Solid-state green-light-emitting upconversion coherent random laser in macroporous LiNbO₃:Er[J]. Chinese Optics Letters, 2018, 16(1): 011403.

Solid-state green-light-emitting upconversion coherent random laser in macroporous LiNbO₃:Er

Fig. 1. Emission spectra of the macroporous LN:Er sample at different excitation intensities (30 and 70 kW/cm2, inclination angle: 30°). The inset is an AFM image of the sample.

Fig. 2. Integrated emission intensity as a function of the excitation intensity on a log-log scale for (a) macroporous and (b) bulk LN:Er. The intensities were integrated from 520 to 570 nm (green-light-emission band). Solid lines are the pertinent linear fits.

Fig. 3. Emission spectrum of macroporous LN:Er at 20° from the sample surface (pump intensity: 70 kW/cm2).

Fig. 4. Energy levels of Er3+ showing the ESA and ETU pathways under pumping by a 980 nm.

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Solid-state green-light-emitting upconversion coherent random laser in macroporous LiNbO3:Er

Fig. 1. Emission spectra of the macroporous LN:Er sample at different excitation intensities (30 and 70 kW/cm2, inclination angle: 30°). The inset is an AFM image of the sample.

Fig. 2. Integrated emission intensity as a function of the excitation intensity on a log-log scale for (a) macroporous and (b) bulk LN:Er. The intensities were integrated from 520 to 570 nm (green-light-emission band). Solid lines are the pertinent linear fits.

Fig. 3. Emission spectrum of macroporous LN:Er at 20° from the sample surface (pump intensity: 70 kW/cm2).

Fig. 4. Energy levels of Er3+ showing the ESA and ETU pathways under pumping by a 980 nm.

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Solid-state green-light-emitting upconversion coherent random laser in macroporous LiNbO₃:Er