Generation and application of high power femtosecond pulses in the vibrational fingerprint region

Sugiharto, Albert B.; Johnson, Claes; Aguiar, Hilton B. de; Alloatti, Luca; Roke, Sylvie

doi:10.1007/s00340-008-2993-7

Cited by 42 publications

(38 citation statements)

References 31 publications

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“…Since at least one of the frequencies involved in a three-wave mixing process is necessarily well separated from the others, second-order processes represent in a natural way an excellent candidate for generating mid-IR and far-IR wavelengths [31]. Efficient nonlinear conversion require materials with strong nonlinearities, high-optical intensities, and phase-matching between the waves involved [13].…”

Section: Difference-frequency Generation (Dfg)mentioning

confidence: 99%

Silicon-organic hybrid devices

et al. 2013

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Silicon-organic hybrid (SOH) devices combine silicon waveguides with a number of specialized materials, ranging from third-order optically-nonlinear molecules to second-order nonlinear polymers and liquid-crystals. Second-order nonlinear materials allow building high-speed and low-voltage electro-optic modulators, which are key components for future silicon-based photonics transceivers. We report on a 90 GHz bandwidth phase modulator, and on a 56 Gbit/s QPSK experiment using an IQ Pockels effect modulator. By using liquid-crystal claddings instead, we show experimentally that phase shifters with record-low power consumption and ultra-low voltage-length product of V π L = 0.06 Vmm. Secondorder nonlinear materials, moreover, allow creating nonlinear waveguides for sum-or difference-frequency generation, and for lowest-noise optical parametric amplification. These processes are exploited for a large variety of applications, like in the emerging field of on-chip generation of mid-IR wavelengths, where pump powers are significantly smaller compared to equivalent devices using third-order nonlinear materials. In this work, we present the first SOH waveguide design suited for second-order nonlinear processes. We predict for our device an amplification of 14 dB/cm assuming a conservative χ (2) -nonlinearity of 230 pm/V and a CW pump power as low as 20 dBm.

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Section: Difference-frequency Generation (Dfg)mentioning

confidence: 99%

Silicon-organic hybrid devices

et al. 2013

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“…Assuming further that the nonlinear susceptibility is non-zero only inside the slot, we evaluate numerically the integrals Eq. (5), (6) for the geometry considered in Fig. 3, and find …”

mentioning

confidence: 94%

“…Since at least one of the frequencies involved in a three-wave mixing process is necessarily well separated from the others, second-order processes represent additionally an excellent candidate for generating mid-IR and far-IR wavelengths [6]. Efficient nonlinear conversions require materials with strong nonlinearities, high-optical intensities and phase-matching between the waves involved [1].…”

Section: Introductionmentioning

confidence: 99%

Second-order nonlinear silicon-organic hybrid waveguides

Alloatti¹,

Korn²,

Weimann³

et al. 2012

Opt. Express

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Abstract:We describe a concept for second-order nonlinear optical processes in silicon photonics. A silicon-organic hybrid (SOH) double slot waveguide is dispersion-engineered for mode phase-matching (MPM). The proposed waveguide enables highly efficient nonlinear processes in the mid-IR range. With a cladding nonlinearity of χ (2) = 230 pm/V and 20 dBm pump power at a CW wavelength of 1550 nm, we predict a gain of 14.7 dB/cm for a 3100 nm signal. The suggested structure enables for the first time efficient second-order nonlinear optical mixing in silicon photonics with standard technology. ©2012 Optical Society of America

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“…Cascaded high-energy OPA-systems have nonetheless been implemented in which a second stage of parametric frequency conversion (mostly DFG) enables reaching the mid-IR spectral range at the expense of efficiency and simplicity [201,202,203]. Maximum pulse energies up to 100 µJ at 4 µm with 1 610 kHz repetition rate [202] could be demonstrated. In contrast, OPCPA enables order of magnitude further upscaling of the output energies.…”

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confidence: 99%

Ultrashort pulse generation in the mid-IR

Pires

Baudisch

Sánchez

et al. 2015

Progress in Quantum Electronics

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Recent developments in laser sources operating in the mid-IR (3 -8 µm), have been motivated by the numerous possibilities for both fundamental and applied research. One example is the ability to unambiguously detect pollutants and carcinogens due to the much larger oscillator strengths of their absorption features in the mid-IR spectral region compared with the visible. Broadband sources are of particular interest for spectroscopic applications since they remove the need for arduous scanning or several lasers and allow simultaneous use of multiple absorption features thus increasing the confidence level of detection. In addition, sources capable of producing ultrashort and intense mid-IR radiation are gaining relevance in attoscience and strong-field physics due to wavelength scaling of re-collision based processes. In this paper we review the state-of-the-art in sources of coherent, pulsed mid-IR radiation. First we discuss semi-conductor based sources which are compact and turnkey, but typically do not yield short pulse duration. Mid-IR laser gain material based approaches will be discussed, either for direct broadband mid-IR lasers or as narrowband pump lasers for parametric amplification in nonlinear crystals. The main part will focus on mid-IR generation and amplification based on parametric frequency conversion, enabling highest mid-IR peak power pulses. Lastly we close with an overview of nonlinear post-compression techniques, for decreasing pulse duration to the sub-2-optical-cycle regime.

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Generation and application of high power femtosecond pulses in the vibrational fingerprint region

Cited by 42 publications

References 31 publications

Silicon-organic hybrid devices

Silicon-organic hybrid devices

Second-order nonlinear silicon-organic hybrid waveguides

Ultrashort pulse generation in the mid-IR

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