Regular uniform large-area subwavelength nanogratings fabricated by the interference of two femtosecond laser beams via cylindrical lens

Kaiqiang Cao; Long Chen; Ke Cheng; Zhenrong Sun; Tianqing Jia

doi:doi:10.3788/COL202018.093201

Chinese Optics Letters, 2020, 18 (9): 093201, Published Online: Jul. 24, 2020

Regular uniform large-area subwavelength nanogratings fabricated by the interference of two femtosecond laser beams via cylindrical lens Download： 715次

Kaiqiang Cao ^1,2Long Chen ¹Ke Cheng ¹Zhenrong Sun ¹Tianqing Jia ^1,2,*

Author Affiliations

¹ State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China

² Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China

Figures & Tables

Fig. 1. The experimental setup of femtosecond laser interference via two cylindrical lenses. HWP is half-wave plate, GP is Glan prism, and BS is beam splitter. The double arrow E represents laser polarization.

下载图片查看原文

Fig. 2. Microstructures in the ablation area after radiation of three laser pulses. (b)–(e) Enlarged SEM pictures of the areas in squares in (a). The double arrow in (e) represents laser polarization. Laser fluence of single beam is $1.3 {J / cm}^{2}$ , and the scale bars are 5 μm.

下载图片查看原文

Fig. 3. (a) Subwavelength periodic ripples by direct writing with a single laser beam. (b) RUSNGs ripples fabricated by direct writing of two-beam interference. (c) RUSNGs ripples without etching in HF solution. The double arrow E represents laser polarization, and the narrow ellipse represents the laser focus.

下载图片查看原文

Fig. 4. Different types of micro/nanostructures depending on the laser fluence and scanning velocity.

下载图片查看原文

Fig. 5. Periods of subwavelength ripples as a function of scanning velocity induced by a single laser beam and two-beam interference.

下载图片查看原文

Fig. 6. (a) Optical image of the colored surface and (b) SEM image of RUSNGs. The scale bar is 5 μm.

下载图片查看原文

Fig. 7. Optical characterization measurements of the periodic ripples. (I) Diagrammatic sketch of the diffraction spectra test; diffraction spectra of (a) subwavelength ripples generated by single laser beam and (b) RUSNGs.

下载图片查看原文

Fig. 8. CIE $xy$ chromaticity diagram showing the colors of the RUSNGs (red dots) and subwavelength ripples (black dots).

下载图片查看原文

Fig. 9. Colorful optical image of the pattern of “raining petals” covered with RUSNGs.

下载图片查看原文

Fig. 10. Colorful optical images of two flowers with nanogratings in different directions. (I) Schematic of the processing method. Flowers with nanogratings in (a) azimuth direction and (b) radial direction. The two enlarged SEM pictures represent the nanogratings in the corresponding squares. The scale bars are 5 μm.

下载图片查看原文

Kaiqiang Cao, Long Chen, Ke Cheng, Zhenrong Sun, Tianqing Jia. Regular uniform large-area subwavelength nanogratings fabricated by the interference of two femtosecond laser beams via cylindrical lens[J]. Chinese Optics Letters, 2020, 18(9): 093201.

Regular uniform large-area subwavelength nanogratings fabricated by the interference of two femtosecond laser beams via cylindrical lens Download： 715次

Fig. 1. The experimental setup of femtosecond laser interference via two cylindrical lenses. HWP is half-wave plate, GP is Glan prism, and BS is beam splitter. The double arrow E represents laser polarization.

Fig. 2. Microstructures in the ablation area after radiation of three laser pulses. (b)–(e) Enlarged SEM pictures of the areas in squares in (a). The double arrow in (e) represents laser polarization. Laser fluence of single beam is $1.3 {J / cm}^{2}$ , and the scale bars are 5 μm.

Fig. 4. Different types of micro/nanostructures depending on the laser fluence and scanning velocity.

Fig. 5. Periods of subwavelength ripples as a function of scanning velocity induced by a single laser beam and two-beam interference.

Fig. 6. (a) Optical image of the colored surface and (b) SEM image of RUSNGs. The scale bar is 5 μm.

Fig. 7. Optical characterization measurements of the periodic ripples. (I) Diagrammatic sketch of the diffraction spectra test; diffraction spectra of (a) subwavelength ripples generated by single laser beam and (b) RUSNGs.

Fig. 8. CIE $xy$ chromaticity diagram showing the colors of the RUSNGs (red dots) and subwavelength ripples (black dots).

Fig. 9. Colorful optical image of the pattern of “raining petals” covered with RUSNGs.

关于本站 Cookie 的使用提示

全站搜索

Regular uniform large-area subwavelength nanogratings fabricated by the interference of two femtosecond laser beams via cylindrical lens Download： 715次

Fig. 1. The experimental setup of femtosecond laser interference via two cylindrical lenses. HWP is half-wave plate, GP is Glan prism, and BS is beam splitter. The double arrow E represents laser polarization.

Fig. 2. Microstructures in the ablation area after radiation of three laser pulses. (b)–(e) Enlarged SEM pictures of the areas in squares in (a). The double arrow in (e) represents laser polarization. Laser fluence of single beam is 1.3 J/cm2, and the scale bars are 5 μm.

Fig. 4. Different types of micro/nanostructures depending on the laser fluence and scanning velocity.

Fig. 5. Periods of subwavelength ripples as a function of scanning velocity induced by a single laser beam and two-beam interference.

Fig. 6. (a) Optical image of the colored surface and (b) SEM image of RUSNGs. The scale bar is 5 μm.

Fig. 7. Optical characterization measurements of the periodic ripples. (I) Diagrammatic sketch of the diffraction spectra test; diffraction spectra of (a) subwavelength ripples generated by single laser beam and (b) RUSNGs.

Fig. 8. CIE xy chromaticity diagram showing the colors of the RUSNGs (red dots) and subwavelength ripples (black dots).

Fig. 9. Colorful optical image of the pattern of “raining petals” covered with RUSNGs.

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索

Fig. 2. Microstructures in the ablation area after radiation of three laser pulses. (b)–(e) Enlarged SEM pictures of the areas in squares in (a). The double arrow in (e) represents laser polarization. Laser fluence of single beam is $1.3 {J / cm}^{2}$ , and the scale bars are 5 μm.

Fig. 8. CIE $xy$ chromaticity diagram showing the colors of the RUSNGs (red dots) and subwavelength ripples (black dots).