Laser-writing of ring-shaped waveguides in BGO crystal for telecommunication band

Li, Lingqi; Nie, Weijie; Romero, Carolina; Rodríguez-Beltrán, René I.; Aldana, Javier R. Vázquez de; Chen, Feng

doi:10.1364/oe.25.024236

Cited by 18 publications

(12 citation statements)

References 30 publications

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“…On the contrary, the fabrication of type I waveguides in crystalline substrates is a very challenging task, since it requires finding a very narrow processing parameters window, if any. So far, this fabrication regime has been demonstrated only in a very limited number of cases [18][19][20], including lithium niobate [21][22][23], potassium dihydrogen phosphate (KDP) [24] and polycrystalline matrices [25,26].…”

Section: Introductionmentioning

confidence: 99%

Laser-written integrated platform for quantum storage of heralded single photons

Seri¹,

Corrielli²,

Lago-Rivera³

et al. 2018

Optica

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Efficient and long-lived interfaces between light and matter are crucial for the development of quantum information technologies. Integrated photonics solutions for quantum storage devices offer improved performances due to light confinement and enable more complex and scalable designs. We demonstrate a novel platform for quantum light storage based on laser written waveguides. The new writing regime adopted allows us to attain waveguides with improved confining capabilities compared to previous demonstrations. We report the first demonstration of single photon storage in laser written waveguides. While we achieve storage efficiencies comparable to those observed in massive samples, the power involved for the memory preparation is strongly reduced, by a factor 100, due to an enhancement of the light-matter interaction of almost one order of magnitude. Moreover, we demonstrate excited state storage times 100 times longer than previous realizations with single photons in integrated quantum memories. Our system promises to effectively fulfill the requirements for efficient and scalable integrated quantum storage devices.

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Section: Introductionmentioning

confidence: 99%

Laser-written integrated platform for quantum storage of heralded single photons

Seri¹,

Corrielli²,

Lago-Rivera³

et al. 2018

Optica

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“…Furthermore, the waveguiding region is not stable with temperature, and the guidance is only supported in one polarization direction. Therefore, this type of waveguide has been reported in few crystalline materials such as LiNbO 3 , ZnSe and YCa 4 O(BO 3 ) 3 [35,[48][49][50][51].…”

Section: Ultrafast Laser Inscriptionmentioning

confidence: 99%

Ultrafast Laser Inscription of Buried Waveguides in W-TCP Bioactive Eutectic Glasses

Sola¹,

Peña²

2018

Advanced Surface Engineering Research

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Since the first report of Davis in 1996, ultrafast laser inscription (ULI) has been widely used to fabricate buried optical devices such as active and passive waveguides inside dielectric materials. In this technique, ultra-short and ultra-intense laser pulses are tightly focused inside transparent materials leading to laser-induced nonlinear processes in the focal volume. The energy density deposited into the submicron focal volume can reach several of MJcm −3 and hence, may trigger dramatic changes in a strongly localized region, whereas the surrounding bulk material remains unchanged. This technique can be used from void formation to weak refractive index modification, which is the key feature to create buried optical waveguides. In this chapter, firstly, we review the fundamentals of the ultrafast laser inscription technique to produce optical waveguides inside dielectric materials such as crystals and glasses. Next, as an example, we revise the application of this technique to create buried waveguides inside bioactive glasses and specifically, inside W-TCP eutectic glasses.

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“…Due to its simplicity in fabrication, single-line waveguides are the early research focuses of FsLDW linear and nonlinear waveguide geometries, especially based on multi-functional LiNbO 3 crystals 20,32 . Recently, 1×4 beam splitters and ring-shape distributed beam profiles have been demonstrated based on single-line waveguides in LiNbO 3 33 and BGO 34 , respectively. Furthermore, a variant evolved from single-line approach carries out multiple laser scans that are overlapped/neighbored transversally to the writing direction.…”

Section: Variability -Design Prototypes For Nonlinear Waveguide Geomementioning

confidence: 99%

Femtosecond laser direct writing of flexibly configured waveguide geometries in optical crystals: fabrication and application

Jia¹,

Wang²,

Chen³

2020

Opto-Electronic Advances

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137

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Optical waveguides are far more than mere connecting elements in integrated optical systems and circuits. Benefiting from their high optical confinement and miniaturized footprints, waveguide structures established based on crystalline materials, particularly, are opening exciting possibilities and opportunities in photonic chips by facilitating their on-chip integration with different functionalities and highly compact photonic circuits. Femtosecond-laser-direct writing (FsLDW), as a true three-dimensional (3D) micromachining and microfabrication technology, allows rapid prototyping of on-demand waveguide geometries inside transparent materials via localized material modification. The success of FsLDW lies not only in its unsurpassed aptitude for realizing 3D devices but also in its remarkable material-independence that enables cross-platform solutions. This review emphasizes FsLDW fabrication of waveguide structures with 3D layouts in dielectric crystals. Their functionalities as passive and active photonic devices are also demonstrated and discussed.

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Laser-writing of ring-shaped waveguides in BGO crystal for telecommunication band

Cited by 18 publications

References 30 publications

Laser-written integrated platform for quantum storage of heralded single photons

Laser-written integrated platform for quantum storage of heralded single photons

Ultrafast Laser Inscription of Buried Waveguides in W-TCP Bioactive Eutectic Glasses

Femtosecond laser direct writing of flexibly configured waveguide geometries in optical crystals: fabrication and application

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