Highly Efficient Second-Harmonic Generation in Monolithic Matching Layer Enhanced Al$_x$Ga$_{1-x}$As Bragg Reflection Waveguides

Abolghasem, Payam; Han, Junbo; Bijlani, Bhavin J.; Arjmand, Arghavan; Helmy, Amr S.

doi:10.1109/lpt.2009.2027996

Cited by 46 publications

(75 citation statements)

References 8 publications

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“…The normalized conversion efficiencies were estimated to be 5.30 × 10 3 and 1.14 × 10 4 % W 1 cm 2 for type I and type II interactions, respectively. Also the measured secondharmonic power and nonlinear conversion efficiency indicated more than an order of magnitude enhancement with respect to the QtW-BRW design in [66]. Moreover, the results obtained here prove the useful power levels of the generated second-harmonic signal and indicate the potential practicality of these devices.…”

Section: Improvements Of Simple Bragg Reflection Waveguidessupporting

confidence: 57%

“…The index and field profiles of a fabricated BRW-ML [66] along with the previously characterized QtW-BRW [92] are shown in Fig. 8.…”

Section: Improvements Of Simple Bragg Reflection Waveguidesmentioning

confidence: 99%

“…Both type I and type II interactions were examined. Under an internal input pump power of 3.3 mW, 28 and 60 μW Figure 8 (online color at: www.lpr-journal.org) Field and index profiles of the pump (dashed curve) and second harmonic (solid curve) for a) BRW-ML structure which is characterized in [66] and b) QtW-BRW structure which is characterized in [92]. The core layer is located at x 0 in both figures.…”

Section: Improvements Of Simple Bragg Reflection Waveguidesmentioning

confidence: 99%

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Recent advances in phase matching of second‐order nonlinearities in monolithic semiconductor waveguides

Helmy

Abolghasem

Aitchison

et al. 2010

Laser & Photonics Reviews

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Techniques used to assist phase matching of second-order nonlinearities in semiconductor waveguides are reviewed. The salient points of each method are highlighted, with their strengths and weaknesses with regard to various key applications discussed. Recent progress in these techniques is also reviewed. Emphasis is placed on two techniques, namely quasi-phase matching via domain disordering utilizing quantum well intermixing, and exact phase matching using Bragg reflection waveguides.The figure shows (a) An optical microscope image of an ion implantation mask used to fabricate gratings used for quasiphase matching, (b) a scanning electron micrograph of an ion implantation mask, (c) a scanning electron micrograph of a semiconductor ridge waveguide structure, and (d) an optical microscope image of group monolithic ring lasers designed for integration with quasiphase matched structures.

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Section: Improvements Of Simple Bragg Reflection Waveguidessupporting

confidence: 57%

“…The index and field profiles of a fabricated BRW-ML [66] along with the previously characterized QtW-BRW [92] are shown in Fig. 8.…”

Section: Improvements Of Simple Bragg Reflection Waveguidesmentioning

confidence: 99%

Section: Improvements Of Simple Bragg Reflection Waveguidesmentioning

confidence: 99%

See 1 more Smart Citation

Recent advances in phase matching of second‐order nonlinearities in monolithic semiconductor waveguides

Helmy

Abolghasem

Aitchison

et al. 2010

Laser & Photonics Reviews

Self Cite

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show abstract

“…An example of such work is the utilization of matching layers in these structures [9,13]. The proposed method also operates at the quarter wave point; however, it eliminates the restrictions on the layer thicknesses as well as the trade-offs that exist between the device performance measures in a conventional BRW.…”

Section: Motivationmentioning

confidence: 99%

Coupled interface modes for nonlinear interaction in periodic layered media

Arjmand

Abolghasem

Han

et al. 2010

2010 IEEE Photinic Society's 23rd Annual Meeting

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and nonlinear properties. Second harmonic generation is adopted for the demonstration of nonlinear interaction, due to its convenient experimental set-up. Three different laser sources are used to pump the waveguides and second harmonic light is generated and characterized. Coupled interface modes in conjunction with other types of modes also existing within the same structures, offer the possibility to explore three-wave mixing processes such as sum and difference frequency generation.ii

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“…In particular, they include (i) the introduction of additional thin oxidized layers of Al (in the core region of the waveguides) in order to break the isotropy of GaAs and induce artificial birefringence [11]; (ii) periodic domain orientations or quantum well intermixing [8][9][10] for QPM; or (iii) multi--step etching of "M-shaped" waveguides for MPM [7,8]. In addition, even more advanced photonic structures in the form of the Bragg reflector waveguides [16], ring resonators [17], and waveguide couplers [18] suitable for SHG have also been investigated.…”

Section: Introductionmentioning

confidence: 99%

Second Harmonic Generation in AlGaAs Nanowaveguides

et al. 2011

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In this paper, we investigate semiconductor nanowaveguides (i.e. ridge waveguides with core-widths narrower than 1 µm) intended to act as novel optical light sources through nonlinear wavelength/frequency conversion. In particular, numerical calculations have been performed in order to design suitable photonic devices (fabricated in the AlGaAs/GaAs platform) capable of high efficiency second harmonic generation. Particular interest has been dedicated to the effective conversion of optical signals from 1520-1600 nm (the third telecom window) down to 760-800 nm. We demonstrate that the output wavelength (resulting from modal phase-matching) can be dynamically tuned by proper adjustment of the temperature and/or geometrical parameters of the waveguides. In addition, by changing the waveguide width it is also possible to modify the device dispersion characteristics, giving the possibility to work in the region of anomalous dispersion and thus allowing for the generation of temporal solitons.

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Highly Efficient Second-Harmonic Generation in Monolithic Matching Layer Enhanced Al$_x$Ga$_{1-x}$As Bragg Reflection Waveguides

Cited by 46 publications

References 8 publications

Recent advances in phase matching of second‐order nonlinearities in monolithic semiconductor waveguides

Recent advances in phase matching of second‐order nonlinearities in monolithic semiconductor waveguides

Coupled interface modes for nonlinear interaction in periodic layered media

Second Harmonic Generation in AlGaAs Nanowaveguides

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