High efficiency second harmonic generation of nanojoule-level femtosecond pulses in the visible based on BiBO

Mario Galletti; Hugo Pires; Victor Hariton; Celso Paiva João; Swen Künzel; Marco Galimberti; Gonçalo Figueira

doi:doi:10.1017/hpl.2018.72

High Power Laser Science and Engineering, 2019, 7 (1): 01000e11, Published Online: Feb. 25, 2019

High efficiency second harmonic generation of nanojoule-level femtosecond pulses in the visible based on BiBO

Mario Galletti ^1,2Hugo Pires ¹Victor Hariton ¹Celso Paiva João ¹Swen Künzel ¹Marco Galimberti ²Gonçalo Figueira ¹

Author Affiliations

¹ GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal

² Central Laser Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot OX11 0QX, UK

Figures & Tables

Fig. 1. Experimental setup in SHG experiment. $\unicode[STIX]{x1D706}/2,\unicode[STIX]{x1D706}/4$: waveplates; EC: pump energy control; FL: focusing lens; C: nonlinear crystal; CL: collimating lens; DM: dichroic mirror; FM: flip mirror; SM: spectrometer; CAM: camera; PM: power meter; SA: spectrum analyzer; PC: computer.

下载图片查看原文

Fig. 2. Comparison between pump and SHG spatial profile, respectively.

下载图片查看原文

Fig. 3. Autocorrelation measurement of the pulse at 1030, 1054, 1000 and 980 nm for top left, top right, bottom left and bottom right, respectively.

下载图片查看原文

Fig. 4. Input (red) and depleted (orange) signal spectra for 1030, 1054, 1000 and 980 nm pulses.

下载图片查看原文

Fig. 5. SHG power versus input power at different wavelengths.

下载图片查看原文

Fig. 6. SHG efficiency versus input energy and average power for different wavelengths.

下载图片查看原文

Fig. 7. Comparison (measured and simulated data) of the SHG efficiency as a function of the input intensity for different wavelengths.

下载图片查看原文

Fig. 8. Experimental and simulated second harmonic generation spectrum of 1030 nm pumping beam.

下载图片查看原文

Fig. 9. SHG efficiency versus focal spot diameter at two different energies: 3.7 and 3.8 nJ for the same crystal length.

下载图片查看原文

Fig. 10. Second harmonic generation simulation determining the temporal length of the SHG pulse.

下载图片查看原文

Table1. Autocorrelation and spectral experimental data. $\unicode[STIX]{x1D70F}_{\text{AC}}$ – FWHM of the autocorrelation trace, $\unicode[STIX]{x1D70F}_{\text{pulse}}$ – retrieved Gaussian FWHM pulse length, $\unicode[STIX]{x0394}\unicode[STIX]{x1D706}$ – spectral FWHM bandwidth and $\unicode[STIX]{x1D70F}_{\text{pulse}}^{\text{TL}}$ – supported (transform-limited) pulse length.

$\unicode[STIX]{x1D706}$ (nm)	$\unicode[STIX]{x1D70F}_{\text{AC}}$ (fs)	$\unicode[STIX]{x1D70F}_{\text{pulse}}$ (fs)	$\unicode[STIX]{x0394}\unicode[STIX]{x1D706}$ (nm)	$\unicode[STIX]{x1D70F}_{\text{pulse}}^{\text{TL}}$ (fs)
1030	164	116	14.3	109
1054	174	123	16.1	101
1000	225	159	12.4	118
980	263	186	9.3	152

查看原文

Table2. SHG spectral experimental data. $\unicode[STIX]{x0394}\unicode[STIX]{x1D706}$ represents the FWHM bandwidth of the SHG spectrum and $\unicode[STIX]{x1D70F}_{\text{SHG}}^{\text{TL}}$ the retrieved FWHM of the supported SHG pulse temporal length assuming Gaussian shape.

$\unicode[STIX]{x1D706}$ (nm)	$\unicode[STIX]{x0394}\unicode[STIX]{x1D706}$ (nm)	$\unicode[STIX]{x1D70F}_{\text{SHG}}^{\text{TL}}$ (fs)
515	2.98	130.6
527	3.89	104.5
500	3.16	118.2
490	1.89	186.5

查看原文

Mario Galletti, Hugo Pires, Victor Hariton, Celso Paiva João, Swen Künzel, Marco Galimberti, Gonçalo Figueira. High efficiency second harmonic generation of nanojoule-level femtosecond pulses in the visible based on BiBO[J]. High Power Laser Science and Engineering, 2019, 7(1): 01000e11.

High efficiency second harmonic generation of nanojoule-level femtosecond pulses in the visible based on BiBO

Fig. 2. Comparison between pump and SHG spatial profile, respectively.

Fig. 3. Autocorrelation measurement of the pulse at 1030, 1054, 1000 and 980 nm for top left, top right, bottom left and bottom right, respectively.

Fig. 4. Input (red) and depleted (orange) signal spectra for 1030, 1054, 1000 and 980 nm pulses.

Fig. 5. SHG power versus input power at different wavelengths.

Fig. 6. SHG efficiency versus input energy and average power for different wavelengths.

Fig. 7. Comparison (measured and simulated data) of the SHG efficiency as a function of the input intensity for different wavelengths.

Fig. 8. Experimental and simulated second harmonic generation spectrum of 1030 nm pumping beam.

Fig. 9. SHG efficiency versus focal spot diameter at two different energies: 3.7 and 3.8 nJ for the same crystal length.

Fig. 10. Second harmonic generation simulation determining the temporal length of the SHG pulse.

Table2. SHG spectral experimental data. $\unicode[STIX]{x0394}\unicode[STIX]{x1D706}$ represents the FWHM bandwidth of the SHG spectrum and $\unicode[STIX]{x1D70F}_{\text{SHG}}^{\text{TL}}$ the retrieved FWHM of the supported SHG pulse temporal length assuming Gaussian shape.

关于本站 Cookie 的使用提示

全站搜索

High efficiency second harmonic generation of nanojoule-level femtosecond pulses in the visible based on BiBO

Fig. 2. Comparison between pump and SHG spatial profile, respectively.

Fig. 3. Autocorrelation measurement of the pulse at 1030, 1054, 1000 and 980 nm for top left, top right, bottom left and bottom right, respectively.

Fig. 4. Input (red) and depleted (orange) signal spectra for 1030, 1054, 1000 and 980 nm pulses.

Fig. 5. SHG power versus input power at different wavelengths.

Fig. 6. SHG efficiency versus input energy and average power for different wavelengths.

Fig. 7. Comparison (measured and simulated data) of the SHG efficiency as a function of the input intensity for different wavelengths.

Fig. 8. Experimental and simulated second harmonic generation spectrum of 1030 nm pumping beam.

Fig. 9. SHG efficiency versus focal spot diameter at two different energies: 3.7 and 3.8 nJ for the same crystal length.

Fig. 10. Second harmonic generation simulation determining the temporal length of the SHG pulse.

Table2. SHG spectral experimental data. $\unicode[STIX]{x0394}\unicode[STIX]{x1D706}$ represents the FWHM bandwidth of the SHG spectrum and $\unicode[STIX]{x1D70F}_{\text{SHG}}^{\text{TL}}$ the retrieved FWHM of the supported SHG pulse temporal length assuming Gaussian shape.

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索