Near-IR- and UV-femtosecond laser waveguide inscription in silica glasses

Michele, Vincenzo De; Royon, Maxime; Marin, Emmanuel; Alessi, A.; Morana, Adriana; Boukenter, Aziz; Cannas, Marco; Girard, Sylvain; Ouerdane, Y.

doi:10.1364/ome.9.004624

Cited by 21 publications

(9 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The rigidity claim is further supported by the distribution seen in Figure 5. There is a dependence of laser fluence on the BAD in both Na and Ca systems, based upon findings of previous studies highlighting the correlation between pressure and densification 40,51,56 . Given the rigidity of the calcium modified system, we anticipate a smaller distribution compared to the floppy sodium modified SLS glass 57 .…”

Section: Resultsmentioning

confidence: 53%

“…There is a dependence of laser fluence on the BAD in both Na and Ca systems, based upon findings of previous studies highlighting the correlation between pressure and densification. 40,51,56 Given the rigidity of the calcium modified system, we anticipate a smaller distribution compared to the floppy sodium modified SLS glass. 57 Based on the research of Hehlen et al, 58 our previous claim regarding network rigidity and pressure-induced femtosecond laser modification of Si-O-Si BAD is highly dependent on the system connectivity.…”

Section: Structure Of Laser-modified Glassesmentioning

confidence: 96%

See 1 more Smart Citation

Structural modifications of soda‐lime silicate glasses using femtosecond pulse‐laser irradiation

Locker

Clark

Sundaram

2020

Int J of Appl Glass Sci

View full text Add to dashboard Cite

Femtosecond pulse laser radiation (250 fs, 1030 nm) of alkali and alkaline earth modified soda-lime silicate (SLS) glasses resulted in densification. The degree of density changes depends on pulse energy and glass-network connectivity. Raman spectroscopy study of the high-frequency region (800-1200 cm −1) confirmed that surface densification was the result of interatomic changes in the distribution of silicon-nonbridging oxygen (NBO) bond lengths and Si-O-Si bond angle distribution (BAD). Modifier valency contributes to structural rigidity and the degree of disorder a glass can incur during the deposition of high-energy laser pulses. Varying soda content caused larger shift in the laser modified Q 3 band position and width compared to the calcium modified system. Increasing laser fluence was found to affect the position of Q 3 Si-O stretching mode as well as the band width, indicating the increased degree of disorder laser pulses induce. These results underscore the role of modifier ions in the laser-induced densification of the SLS glasses. K E Y W O R D S densification, femtosecond laser, Raman, silicate glass How to cite this article: Locker S, Clark JA, Sundaram SK. Structural modifications of soda-lime silicate glasses using femtosecond pulse-laser irradiation. Int J

show abstract

Section: Resultsmentioning

confidence: 53%

Section: Structure Of Laser-modified Glassesmentioning

confidence: 96%

Structural modifications of soda‐lime silicate glasses using femtosecond pulse‐laser irradiation

Locker

Clark

Sundaram

2020

Int J of Appl Glass Sci

View full text Add to dashboard Cite

show abstract

“…The initial fused silica surface is characterized by a main broad peak at 435 cm −1 (w 1 ), which corresponds to Si–O–Si bonds oscillating and bending in the SiO 4 tetrahedrons [ 45 , 46 , 47 ]. Peaks detected at 488 and 604 cm −1 can be assigned to four- (D 1 ) and three-membered (D 2 ) rings of the SiO 4 tetrahedrons, respectively [ 45 , 48 ]. At 800 cm −1 , the spectrum reveals a peak of the symmetric stretching mode of the Si–O–Si (w 3 ).…”

Section: Resultsmentioning

confidence: 99%

“…This confirms an almost complete ablation of the gold layer during fs-laser irradiation and excludes an impact of possible gold residues on the functional surface properties. Furthermore, a significant laser-induced modification of the chemical surface composition caused by LIPSS formation can be excluded [ 22 , 48 ].…”

Section: Resultsmentioning

confidence: 99%

Large-Area Fabrication of Laser-Induced Periodic Surface Structures on Fused Silica Using Thin Gold Layers

et al. 2020

View full text Add to dashboard Cite

Despite intensive research activities in the field of laser-induced periodic surface structures (LIPSS), the large-area nanostructuring of glasses is still a challenging problem, which is mainly caused by the strongly non-linear absorption of the laser radiation by the dielectric material. Therefore, most investigations are limited to single-spot experiments on different types of glasses. Here, we report the homogeneous generation of LIPSS on large-area surfaces of fused silica using thin gold layers and a fs-laser with a wavelength λ = 1025 nm, a pulse duration τ = 300 fs, and a repetition frequency frep = 100 kHz as radiation source. For this purpose, single-spot experiments are performed to study the LIPSS formation process as a function of laser parameters and gold layer thickness. Based on these results, the generation of large-area homogenous LIPSS pattern was investigated by unidirectional scanning of the fs-laser beam across the sample surface using different line spacing. The nanostructures are characterized by a spatial period of about 360 nm and a modulation depth of around 160 nm. Chemical surface analysis by Raman spectroscopy confirms a complete ablation of the gold film by the fs-laser irradiation. The characterization of the functional properties shows an increased transmission of the nanostructured samples accompanied by a noticeable change in the wetting properties, which can be additionally modified within a wide range by silanization. The presented approach enables the reproducible LIPSS-based laser direct-writing of sub-wavelength nanostructures on glasses and thus provides a versatile and flexible tool for novel applications in the fields of optics, microfluidics, and biomaterials.

show abstract

“…23 This slit beam shaping technique was also adopted to produce low loss, circular WGs in glass with a long working-distance objective lens. 25,33,34 For a circular Gaussian beam and an elliptical Gaussian beam, the energy distribution near the focal point is described as 23…”

Section: Slit Beam Shapingmentioning

confidence: 99%

Photonic circuits written by femtosecond laser in glass: improved fabrication and recent progress in photonic devices

et al. 2021

View full text Add to dashboard Cite

Integrated photonics is attracting considerable attention and has found many applications in both classical and quantum optics, fulfilling the requirements for the ever-growing complexity in modern optical experiments and big data communication. Femtosecond (fs) laser direct writing (FLDW) is an acknowledged technique for producing waveguides (WGs) in transparent glass that have been used to construct complex integrated photonic devices. FLDW possesses unique features, such as three-dimensional fabrication geometry, rapid prototyping, and single step fabrication, which are important for integrated communication devices and quantum photonic and astrophotonic technologies. To fully take advantage of FLDW, considerable efforts have been made to produce WGs over a large depth with low propagation loss, coupling loss, bend loss, and highly symmetrical mode field. We summarize the improved techniques as well as the mechanisms for writing high-performance WGs with controllable morphology of cross-section, highly symmetrical mode field, low loss, and high processing uniformity and efficiency, and discuss the recent progress of WGs in photonic integrated devices for communication, topological physics, quantum information processing, and astrophotonics. Prospective challenges and future research directions in this field are also pointed out.

show abstract

Near-IR- and UV-femtosecond laser waveguide inscription in silica glasses

Cited by 21 publications

References 32 publications

Structural modifications of soda‐lime silicate glasses using femtosecond pulse‐laser irradiation

Structural modifications of soda‐lime silicate glasses using femtosecond pulse‐laser irradiation

Large-Area Fabrication of Laser-Induced Periodic Surface Structures on Fused Silica Using Thin Gold Layers

Photonic circuits written by femtosecond laser in glass: improved fabrication and recent progress in photonic devices

Contact Info

Product

Resources

About