40-GHz picosecond-pulse second-harmonic generation in an MgO-doped PPLN waveguide

Fonseca-Campos, Jorge; Wang, Yong; Chen, Bin; Xu, Chang‐Qing; Yang, Sigang; Ponomarev, E. A.; Bao, Xiaoyi

doi:10.1109/jlt.2006.882235

Cited by 9 publications

(2 citation statements)

References 21 publications

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“…As a result, the thermal effect is an important aspect to be taken into account in high-power applications. In many applications, such as lidar, remote sensing, spectroscopy, coherent communications, dense wavelength-division, and time-division multiplexing and demultiplexing, the noise characteristics of second-harmonic (SH) waves generated in nonlinear interactions are concerned since the noise in the SH wave can significantly impact the accuracy of measurement [2][3][4][5][14][15][16]. As a result, it is important to investigate the noise characteristics in SHG processes under different conditions, such as power, material, temperature, and so forth.…”

Section: Introductionmentioning

confidence: 99%

Noise Analysis of Second‐Harmonic Generation in Undoped and MgO‐Doped Periodically Poled Lithium Niobate

Wang

Fonseca-Campos

Liang

et al. 2008

Advances in OptoElectronics

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Noise characteristics of second-harmonic generation (SHG) in periodically poled lithium niobate (PPLN) using the quasiphase matching (QPM) technique are analyzed experimentally. In the experiment, a0.78 μm second-harmonic (SH) wave was generated when a 1.56 μm fundamental wave passed through a PPLN crystal (bulk or waveguide). The time-domain and frequency-domain noise characteristics of the fundamental and SH waves were analyzed. By using the pump-probe method, the noise characteristics of SHG were further analyzed when a visible light (532 nm) and an infrared light (1090 nm) copropagated with the fundamental light, respectively. The noise characterizations were also investigated at different temperatures. It is found that for the bulk and waveguide PPLN crystals, the SH wave has a higher relative noise level than the corresponding fundamental wave. For the same fundamental wave, the SH wave has lower noise in a bulk crystal than in a waveguide, and in MgO-doped PPLN than in undoped PPLN. The 532 nm irradiation can lead to higher noise in PPLN than the 1090 nm irradiation. In addition, increasing temperature of device can alleviate the problem of noise in conjunction with the photorefractive effect incurred by the irradiation light. This is more significant in undoped PPLN than in MgO-doped one.

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Section: Introductionmentioning

confidence: 99%

Noise Analysis of Second‐Harmonic Generation in Undoped and MgO‐Doped Periodically Poled Lithium Niobate

Wang

Fonseca-Campos

Liang

et al. 2008

Advances in OptoElectronics

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“…Quasi-phase matched nonlinear optical effects in lithium niobate (LiNbO 3 ) crystals are widely used, e.g., for secondharmonic generation (SHG) [1][2][3] and optical parametric oscillation [4][5][6]. Quasi-phase matching (QPM) compensates the effect of the dispersion of the refractive index by inverting the sign of the nonlinear optical susceptibility when the pump beam and the signal beam get out of phase, which typically happens on the scale of 10 μm [7].…”

Section: Introductionmentioning

confidence: 99%

Domain patterns for quasi-phase matching in whispering-gallery modes

Haertle

2010

J. Opt.

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Quasi-phase matching conditions for second-harmonic generation are analyzed for whispering-gallery modes. Several domain patterns, particularly those useful for resonators made of lithium niobate, are compared in terms of their effective nonlinear optical coefficients and spectral bandwidths. Only if the grating period at the circular surface of the resonator is monotonically increasing will the effective nonlinearity be independent of small variations of the properties of the resonator, such as the radius, and the offset between the domain pattern and the center of the resonator.

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Optical Communications and Modulation Techniques in 5G

Wang

Chee

2018

Energy Systems in Electrical Engineering

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40-GHz picosecond-pulse second-harmonic generation in an MgO-doped PPLN waveguide

Cited by 9 publications

References 21 publications

Noise Analysis of Second‐Harmonic Generation in Undoped and MgO‐Doped Periodically Poled Lithium Niobate

Noise Analysis of Second‐Harmonic Generation in Undoped and MgO‐Doped Periodically Poled Lithium Niobate

Domain patterns for quasi-phase matching in whispering-gallery modes

Optical Communications and Modulation Techniques in 5G

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