Publications de Furkan Ayhan | EPFL Graph Search

Fabrication of periodically poled lithium niobate waveguides for broadband nonlinear photonics

Luis Guillermo Villanueva Torrijo, Furkan Ayhan

Nonlinear optics is the precursor for many of the modern-day applications of photonics, including femtosecond pulse synthesis, precision spectroscopy, and metrology. In the last decade, nanophotonic waveguides have not only boosted the efficiencies of nonl ...

2025

Ultraviolet astronomical spectrograph calibration with laser frequency combs from nanophotonic lithium niobate waveguides

Luis Guillermo Villanueva Torrijo, Furkan Ayhan

Astronomical precision spectroscopy underpins searches for life beyond Earth, direct observation of the expanding Universe and constraining the potential variability of physical constants on cosmological scales. Laser frequency combs can provide the requir ...

Nature Research2024

18 GHz Frequency Comb in the UV via On-Chip Cascaded Harmonics

Luis Guillermo Villanueva Torrijo, Furkan Ayhan

We report on an 18 GHz repetition-rate electro-optic frequency comb centered at 390 nm via on-chip cascaded harmonic generation covering more than 2000 lines across 40 THz of optical bandwidth. ...

Optical Society of America2023

18 GHz Ultraviolet Astrocomb via Chip-Integrated Harmonic Generation

Luis Guillermo Villanueva Torrijo, Furkan Ayhan

Current machine learning models for vision are often highly specialized and limited to a single modality and task. In contrast, recent large language models exhibit a wide range of capabilities, hinting at a possibility for similarly versatile models in co ...

Optical Society of America2023

Simulating supercontinua from mixed and cascaded nonlinearities

Luis Guillermo Villanueva Torrijo, Tobias Herr, Victor Brasch, Thibault Voumard, Furkan Ayhan

Nonlinear optical frequency conversion is of fundamental importance in photonics and underpins countless of its applications: Sum- and difference-frequency generation in media with quadratic nonlinearity permits reaching otherwise inaccessible wavelength r ...

AIP Publishing2023

PDMS filter structures for size-dependent larval sorting and on-chip egg extraction of C. elegans

Martinus Gijs, Hüseyin Baris Atakan, Furkan Ayhan

C. elegans-based assays require age-synchronized populations prior to experimentation to achieve standardized sets of worm populations, due to which age-induced heterogeneous phenotyping effects can be avoided. There have been several approaches to synchro ...

ROYAL SOC CHEMISTRY2020

Compound micromachines powered by acoustic streaming

Mahmut Selman Sakar, Murat Kaynak, Furkan Ayhan

This paper presents the design, fabrication, and operation of compound micromachines powered by acoustic streaming. The machine components were directly incorporated around pillars serving as shafts without further assembly steps using a single-step in sit ...

IEEE2019