Second harmonic generation at 544 nm of a femtosecond laser

Hong, Liu; Huang, Zu‐En; Ruan, Jian-Jian; Sun, Dong

doi:10.1016/j.ijleo.2020.164537

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“…[40][41][42] Besides, researchers also pay attention to the second harmonic generation (SHG) characteristics of noble metal nanomaterials, which could be widely used in laser devices, biology, and other fields. [43][44][45][46][47][48] In general, asymmetric metal nanostructures can produce strong SHG signals. Li et al reported that the SHG is caused by the anisotropy of the Au nanorods.…”

Section: Introductionmentioning

confidence: 99%

Ultrabroad spectral response and excellent SERS performance of PbS-assisted Au/PbS/Au nanostars

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Ultrabroad spectral response and excellent SERS performance of PbS-assisted Au/PbS/Au nanostars

et al. 2022

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High efficient optical parametric amplification of femtosecond pulses in MgO doped PPLN crystals at 3.4 µm

Sabirov,

Sornambigai,

Raja

et al. 2023

Opt Quant Electron

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RMS error analysis of spatial uniformity and energy stability of the laser beam in second harmonic generation

Lee,

Jo,

Hwang

et al. 2024

Opt. Express

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The coupling of the energy stability and spatial uniformity of the laser beam before and after second harmonic generation (SHG) was analyzed. SHG experiments were performed using a Nd:YAG nanosecond laser and LBO crystals, and images, pulse shapes, and energies were measured. The relationship between energy stability and spatial uniformity uses a formula derived from the previous study to analyze changes in energy stability and spatial uniformity of the input beam and converted beam. In addition, the measured input beam shape and energy are compared with the results of applying the SHG converting equation considering pump depletion. Both methods were similar to the experimental results when corrected by empirical factors. Through SHG, it was confirmed that there is an optimal point of energy stability and spatial uniformity of the laser beam near the critical power.

show abstract

Second harmonic generation at 544 nm of a femtosecond laser

Cited by 3 publications

References 12 publications

Ultrabroad spectral response and excellent SERS performance of PbS-assisted Au/PbS/Au nanostars

Ultrabroad spectral response and excellent SERS performance of PbS-assisted Au/PbS/Au nanostars

High efficient optical parametric amplification of femtosecond pulses in MgO doped PPLN crystals at 3.4 µm

RMS error analysis of spatial uniformity and energy stability of the laser beam in second harmonic generation

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