Direct third harmonic generation due to quadratic cascaded processes in periodically poled crystals

Das, Susanta Kumar; Mukhopadhyay, S.; Sinha, Nidul; Saha, Ardhendu; Datta, P. K.; Saltiel, S.; Andreani, Lucio Claudio

doi:10.1016/j.optcom.2005.12.040

Cited by 10 publications

(6 citation statements)

References 20 publications

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“…The difference is that generation of intermediate harmonic orders is allowed to be phase mismatched, and the QPM conditions are calculated using the same equation as for direct high-harmonic generation. Indeed, several groups [44][45][46] have studied third harmonic generation via cascaded SHG and SFG in situations where both the SHG and SFG processes are, by themselves, phase mismatched, but the third harmonic process is phase matched, and they reported high conversion efficiencies (up to 25% in the case of Ref. [44]).…”

Section: Mechanism 2: Direct Hhgmentioning

confidence: 99%

“…5b) could be phase matched according to this mechanism. Additionally, since the conversion efficiency to each harmonic order is still influenced by the population of lower-order harmonics [44,45], the direction of light propagation can affect the yield of all harmonic orders. However, this mechanism does not explain the preference for even-order harmonics in the case of pumping in the increasing-poling-period direction.…”

Section: Mechanism 2: Direct Hhgmentioning

confidence: 99%

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High-harmonic generation in periodically poled waveguides

Hickstein

Carlson

Kowligy

et al. 2017

Optica

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Optical waveguides made from periodically poled materials provide high confinement of light and enable the generation of new wavelengths via quasi-phase-matching, making them a key platform for nonlinear optics and photonics. However, such devices are not typically employed for high-harmonic generation. Here, using 200-fs, 10-nJ-level pulses of 4100 nm light at 1 MHz, we generate high harmonics up to the 13 th harmonic (315 nm) in a chirped, periodically poled lithium niobate (PPLN) waveguide. Total conversion efficiencies into the visible-ultraviolet region are as high as 10 percent. We find that the output spectrum depends on the waveguide poling period, indicating that quasi-phase-matching plays a significant role. In the future, such periodically poled waveguides may enable compact sources of ultrashort pulses at high repetition rates and provide new methods of probing the electronic structure of solid-state materials.

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Section: Mechanism 2: Direct Hhgmentioning

confidence: 99%

Section: Mechanism 2: Direct Hhgmentioning

confidence: 99%

High-harmonic generation in periodically poled waveguides

Hickstein

Carlson

Kowligy

et al. 2017

Optica

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“…. Due to the complex dynamics involved, compensation for the sum of the two phase‐mismatches was applied so far to THG, FHG and/or the case where the input frequency wave is negligibly depleted . Recently another approach to frequency‐cascaded and spatially‐simultaneous TWM, based on adiabatic processes, has begun to be implemented .…”

Section: Multi‐process Adiabatic Interaction With Undepleted Pumpmentioning

confidence: 99%

Adiabatic processes in frequency conversion

Suchowski

Porat

Arie

2013

Laser & Photonics Reviews

143

103

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Adiabatic evolution, an important dynamical process in a variety of classical and quantum systems providing a robust way of steering a system into a desired state , was introduced only recently to frequency conversion . Adiabatic frequency conversion allowed the achievement of efficient scalable broadband frequency conversion and was applied successfully to the conversion of ultrashort pulses, demonstrating near‐100% efficiency for ultrabroadband spectrum . The underlying analogy between undepleted pump nonlinear processes and coherently excited quantum systems was extended in the past few years to multi‐level quantum systems, demonstrating new concepts in frequency conversion, such as complete frequency conversion through an absorption band . Additionally, the undepleted pump restriction was removed, enabling the exploration of adiabatic processes in the fully nonlinear dynamics regime of nonlinear optics . In this article, the basic concept of adiabatic frequency conversion is introduced, and recent advances in ultrashort physics, multi‐process systems, and the fully nonlinear dynamics regime are reviewed.

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“…Cascaded second order process has also been used for mode-locking of laser in two ways, namely, nonlinear mirror mode-locking [4], [5] and cascaded second order mode-locking [6], [7]. It has also been used for UV generation by direct third harmonic process [8]. A large intensity-dependent phase distortion can be obtained in optical beams via cascading of second-order nonlinearities which has been still of interest.…”

Section: Introductionmentioning

confidence: 99%

Widely Tunable Intracavity Phasematched Cascaded Second-Order Interaction for the Generation of Multicolor Radiation

Mondal

Singh

Mukherjee

et al. 2015

IEEE J. Quantum Electron.

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A theoretical and experimental study of all-solidstate barium borate (BBO)-based optical parametric oscillator with wide tunability from visible to near-infrared by means of intracavity second-order cascaded nonlinear interaction has been demonstrated for simultaneous generation of multicolor radiation. Radiations in the wavelength range of 600-661 nm in the visible and 892-1322 nm in the near-infrared range are generated by a combination of optical parametric oscillation and simultaneous second harmonic generation in BBO crystal. The effective third-order susceptibility is measured to be 885.18 pm 2 /V 2 , which is greater than intrinsic third-order susceptibility by one order of magnitude.Index Terms-Cascaded second-order optical interaction, optical parametric oscillator (OPO), effective third-order susceptibility.

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Direct third harmonic generation due to quadratic cascaded processes in periodically poled crystals

Cited by 10 publications

References 20 publications

High-harmonic generation in periodically poled waveguides

High-harmonic generation in periodically poled waveguides

Adiabatic processes in frequency conversion

Widely Tunable Intracavity Phasematched Cascaded Second-Order Interaction for the Generation of Multicolor Radiation

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