Ion migration assisted inscription of high refractive index contrast waveguides by femtosecond laser pulses in phosphate glass

2013 ◽  
Vol 38 (24) ◽  
pp. 5248 ◽  
Author(s):  
T. Toney Fernandez ◽  
P. Haro-González ◽  
B. Sotillo ◽  
M. Hernandez ◽  
D. Jaque ◽  
...  
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Phosphate Glass ◽  
Laser Pulses ◽  
High Refractive Index ◽  
Femtosecond Laser Pulses ◽  
Ion Migration ◽  
Refractive Index Contrast ◽  
Index Contrast

scholarly journals Optical Sensitivity of Waveguides Inscribed in Nanoporous Silicate Framework

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 123
Author(s):  
Zhong Lijing ◽  
Roman A. Zakoldaev ◽  
Maksim M. Sergeev ◽  
Andrey B. Petrov ◽  
Vadim P. Veiko ◽  
...  
Keyword(s):  
Refractive Index ◽  
Near Field ◽  
Experimental Studies ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Direct Writing ◽  
Sensor Applications ◽  
Refractive Index Contrast ◽  
Optical Sensitivity ◽  
Index Contrast

Laser direct writing technique in glass is a powerful tool for various waveguides’ fabrication that highly develop the element base for designing photonic devices. We apply this technique to fabricate waveguides in porous glass (PG). Nanoporous optical materials for the inscription can elevate the sensing ability of such waveguides to higher standards. The waveguides were fabricated by a single-scan approach with femtosecond laser pulses in the densification mode, which resulted in the formation of a core and cladding. Experimental studies revealed three types of waveguides and quantified the refractive index contrast (up to Δn = 1.2·10−2) accompanied with ~1.2 dB/cm insertion losses. The waveguides demonstrated the sensitivity to small objects captured by the nanoporous framework. We noticed that the deposited ethanol molecules (3 µL) on the PG surface influence the waveguide optical properties indicating the penetration of the molecule to its cladding. Continuous monitoring of the output near field intensity distribution allowed us to determine the response time (6 s) of the waveguide buried at 400 µm below the glass surface. We found that the minimum distinguishable change of the refractive index contrast is 2 × 10−4. The results obtained pave the way to consider the waveguides inscribed into PG as primary transducers for sensor applications.

scholarly journals Fabrication of a periodic structure with a high refractive-index difference by femtosecond laser pulses

2004 ◽  
Vol 12 (17) ◽  
pp. 4019 ◽  
Author(s):  
Nobuhito Takeshima ◽  
Yutaka Kuroiwa ◽  
Yoshihiro Narita ◽  
Shuhei Tanaka ◽  
Kazuyuki Hirao
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Periodic Structure ◽  
Laser Pulses ◽  
High Refractive Index ◽  
Femtosecond Laser Pulses ◽  
Refractive Index Difference

Integrated platform based on high refractive index contrast waveguide for optical guiding and sorting

2010 ◽  
Author(s):  
Balpreet Singh Ahluwalia ◽  
Olav Gaute Hellesø ◽  
Ananth Z. Subramanian ◽  
James S. Wilkinson ◽  
Jie Chen ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Refractive Index Contrast ◽  
Integrated Platform ◽  
Index Contrast

Resonant modal analysis and dual-mode tailoring in high refractive index contrast two-dimensional nanorod arrays

Optik ◽  
2019 ◽  
Vol 181 ◽  
pp. 231-238
Author(s):  
Jianyu Zhou ◽  
Tian Sang ◽  
Junlang Li ◽  
La Wang ◽  
Rui Wang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Modal Analysis ◽  
High Refractive Index ◽  
Two Dimensional ◽  
Nanorod Arrays ◽  
Dual Mode ◽  
Refractive Index Contrast ◽  
Index Contrast

Changes to the network structure of Er–Yb doped phosphate glass induced by femtosecond laser pulses

2009 ◽  
Vol 106 (8) ◽  
pp. 083107 ◽  
Author(s):  
Luke B. Fletcher ◽  
Jon J. Witcher ◽  
Wilbur B. Reichman ◽  
Alan Arai ◽  
Jim Bovatsek ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Phosphate Glass ◽  
Network Structure ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses
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