Second‐harmonic generation at the Al and Cu surfaces for the fundamental wavelength of λ=532 nm

We have experimentally demonstrated an efficient all-fiber passively Q-switched Yb-doped fiber laser with Samarium doped fiber as a saturable absorber. Average output power of 3.4 W at a repetition rate of 250 kHz and a pulse width of 1.1 microseconds was obtained at a pump power of 9.0 W. By using this fiber laser system and an MgO-doped congruent periodically poled lithium niobate (MgO:c-PPLN), second harmonic generation (SHG) output at 532 nm was achieved at room temperature. The conversion efficiency is around 4.2% which agrees well with the theoretical simulation.

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Intracavity testing of KTiOPO_4 crystals for second-harmonic generation at 532 nm

Applied Optics ◽

10.1364/ao.38.002536 ◽

1999 ◽

Vol 38 (12) ◽

pp. 2536 ◽

Cited By ~ 2

Author(s):

Hervé Albrecht ◽

François Balembois ◽

Dominique Lupinski ◽

Patrick Georges ◽

Alain Brun

Keyword(s):

Second Harmonic Generation ◽

Harmonic Generation ◽

Second Harmonic ◽

532 Nm

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Second Harmonic Generation from Phase-Engineered Metasurfaces of Nanoprisms

Micromachines ◽

10.3390/mi11090848 ◽

2020 ◽

Vol 11 (9) ◽

pp. 848 ◽

Cited By ~ 1

Author(s):

Kanta Mochizuki ◽

Mako Sugiura ◽

Hirofumi Yogo ◽

Stefan Lundgaard ◽

Jingwen Hu ◽

...

Keyword(s):

Second Harmonic Generation ◽

Harmonic Generation ◽

Second Harmonic ◽

Field Enhancement ◽

Normal Incidence ◽

Electrical Field ◽

Fundamental Wavelength ◽

Reflectivity Spectra ◽

Lift Off ◽

Second Order Nonlinearity

Metasurfaces of gold (Au) nanoparticles on a SiO2-Si substrate were fabricated for the enhancement of second harmonic generation (SHG) using electron beam lithography and lift-off. Triangular Au nanoprisms which are non-centro-symmetric and support second-order nonlinearity were examined for SHG. The thickness of the SiO2 spacer is shown to be an effective parameter to tune for maximising SHG. Electrical field enhancement at the fundamental wavelength was shown to define the SHG intensity. Numerical modeling of light enhancement was verified by experimental measurements of SHG and reflectivity spectra at the normal incidence. At the plasmonic resonance, SHG is enhanced up to ∼3.5 × 103 times for the optimised conditions.

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Single pass 7 watts continuous wave 532 nm generation by focusing optimized second harmonic generation in MgO:PPLN

Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII ◽

10.1117/12.2510795 ◽

2019 ◽

Author(s):

Ryan Lai ◽

Chen-Shao Hsu ◽

Cheng-Wei Hsu ◽

Dong-Yi Wu ◽

Karin Wu ◽

...

Keyword(s):

Second Harmonic Generation ◽

Harmonic Generation ◽

Continuous Wave ◽

Second Harmonic ◽

Single Pass ◽

532 Nm

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Investigation of the Characteristic of the Nd:YAG Laser for Standard Wavelength in Metrology

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.770.398 ◽

2013 ◽

Vol 770 ◽

pp. 398-401

Author(s):

Prayut Potirak ◽

Monludee Ranusawud ◽

Pichet Limsuwan ◽

Prathan Buranasiri

Keyword(s):

Second Harmonic Generation ◽

Diode Laser ◽

Harmonic Generation ◽

Nd:Yag Laser ◽

Laser Power ◽

Second Harmonic ◽

Harmonic Generator ◽

Second Harmonic Generator ◽

532 Nm ◽

Nd:Yag Crystal

This research studied characteristics of the Nd:YAG laser with second harmonic generation (SHG) at 532 nm. It can be develop as a standard wavelength according to the recommendation made by the Comite International des Poids et Measures (CIPM). This study investigates various parameters that effect wavelength and laser power of the Nd:YAG laser such as injection current of diode laser, temperature of Nd:YAG crystal and second harmonic generator crystal. Its wavelength can be tuned in the range of standard wavelength at 532.24503 nm with 10-7 of stability.

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