Ultrashort pulse compression method in bulk BBO crystal using electro-optically tunable cascaded second-order process: a theoretical analysis

Deb, Sharbari; Saha, Ardhendu; Asrar, Asim

doi:10.1007/s00340-020-07563-9

Cited by 3 publications

(18 citation statements)

References 40 publications

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“…To understand the significance of the ultra-short pulse compression method, one must first understand the basic principle of the linear EO effect in a transparent crystal, i.e., BBO. The RIs of this particular crystal evolve accordingly when an electric field is applied in the direction of the y-axis of the crystal 25 , 44 , 45 . The modified RIs have resulted in a phase-shifted match or phase mismatch (Δk≠0) between the original fundamental and the fundamental formed by reconversion of the SH [see Eq.…”

Section: Theoretical Model and Principle Of Pulse Compressionmentioning

confidence: 99%

“…(6)] to the propagation length (L), plays an essential role in obtaining a nonlinear phase shift (ΔϕNL). This ΔϕNL was integrated by a cascaded χ2:χ2 nonlinear process, which is expressed as 22 , 23 , 25 ΔϕNL≈−Γ2L2ΔkL.…”

Section: Theoretical Model and Principle Of Pulse Compressionmentioning

confidence: 99%

“…Here, no and I express the linear RI and light intensity, respectively. n2eff denotes the effective nonlinear RI, shown as 6 , 25 n2eff=n2cascade+n2Kerr.…”

Section: Theoretical Model and Principle Of Pulse Compressionmentioning

confidence: 99%

“…ΔϕNL is uniformly modified with I, which only looks like the Kerr effect 48 . Cascaded nonlinear RI, i.e., n2cascade, is the primary representative of cascaded χ2:χ2 non-linearity that may be calculated as 25 n2cascade=−4πLdeff2cε0λ(nω)2n2ωΔkL.…”

Section: Theoretical Model and Principle Of Pulse Compressionmentioning

confidence: 99%

“…The electro-optically (EO) tunable cascading phenomenon recently provided a fresh and exciting avenue for dealing with this problem 22 – 25 …”

Section: Introductionmentioning

confidence: 99%

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Analysis of electro-optically adjustable cascaded second-order nonlinearity in tapered BBO crystal: a compression scheme for ultra-short pulse

Deb

Saha

2023

Opt. Eng.

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In this analytical approach, electro-optically tunable second-order cascaded nonlinearity was targeted to investigate the potential of ultrashort pulse compression in a tapering nonlinear medium. The proposed framework is ideally suited to generating high-intensity pulses with small pulse widths by exploiting second-harmonic generation and the electro-optic effect in a bulk beta-barium borate with exceptional optical advantages. Considering both linear and nonlinear absorption losses, the necessary and sufficient conditions for the compression of ultrashort pulses were developed using the generalized nonlinear Schrödinger equation. In agreement with simulations, an attempt is made to compress an optical pulse from 120 to 39 fs using an external voltage of ∓5.69 KV, which leads to a phase mismatch ðΔk Þ ¼ AE124.8 m −1 , a phase shift ðΔϕ NL Þ ¼ AE1.26π, and an effective cascaded refractive index ðn cascade 2 Þ ¼ AE3.371 × 10 −20 m 2 ∕W. The results suggest that the technology developed in this study will open the door to a plethora of applications, including fields as diverse as laser surgery, range finding through LIDAR, and many more.

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Section: Theoretical Model and Principle Of Pulse Compressionmentioning

confidence: 99%

Section: Theoretical Model and Principle Of Pulse Compressionmentioning

confidence: 99%

“…Here, no and I express the linear RI and light intensity, respectively. n2eff denotes the effective nonlinear RI, shown as 6 , 25 n2eff=n2cascade+n2Kerr.…”

Section: Theoretical Model and Principle Of Pulse Compressionmentioning

confidence: 99%

Section: Theoretical Model and Principle Of Pulse Compressionmentioning

confidence: 99%

“…The electro-optically (EO) tunable cascading phenomenon recently provided a fresh and exciting avenue for dealing with this problem 22 – 25 …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Analysis of electro-optically adjustable cascaded second-order nonlinearity in tapered BBO crystal: a compression scheme for ultra-short pulse

Deb

Saha

2023

Opt. Eng.

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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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Electro-optically tunable cascaded second-order nonlinearity induced (2 + 1)D spatial optical soliton using bulk β-barium borate crystal: a theoretical approach

Deb¹,

Behera²,

Saha³

2022

J. Opt. Soc. Am. B

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This paper deals with the development of an effective theoretical approach to generate spatial optical soliton in exceptionally beneficial bulk beta-barium-borate crystal by utilizing cascaded second-order nonlinearity through electro-optic tuning. The proposed methodology paves the way for novel nonlinear optical interactions conceptualized in bulk material depending upon an effective nonlinear refractive index for a broad range of crystal lengths. The development of ( 2 + 1 ) D spatial bright soliton has been analytically demonstrated at 800 nm wavelength of the incident continuous-wave optical radiation, and the implication of tunable electro-optic effect to the crystal’s nonlinear response is also presented here. Involvement of the generalized nonlinear Schrödinger equation has been utilized to develop the necessary and sufficient criteria for self-trapping optical beams considering both linear and nonlinear absorption losses. In conformity with the findings of the simulation, the beam diameter of a generated spatial soliton within this anisotropic crystal is near 56 µm while maintaining precise peak intensity ∼ 0.8 G W / c m 2 .

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Ultrashort pulse compression method in bulk BBO crystal using electro-optically tunable cascaded second-order process: a theoretical analysis

Cited by 3 publications

References 40 publications

Analysis of electro-optically adjustable cascaded second-order nonlinearity in tapered BBO crystal: a compression scheme for ultra-short pulse

Analysis of electro-optically adjustable cascaded second-order nonlinearity in tapered BBO crystal: a compression scheme for ultra-short pulse

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

Electro-optically tunable cascaded second-order nonlinearity induced (2 + 1)D spatial optical soliton using bulk β-barium borate crystal: a theoretical approach

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