Hemmo Tuovinen

TL;DR: This work reports a first dissipative dispersive-managed soliton fiber laser operating at 2 μm, which employs chirped fiber Bragg grating and ensures net-normal cavity dispersion and semiconductor saturable absorber for mode-locking.

TL;DR: In this paper, the authors used electron-beam lithography to prepare arrays of noncentrosymmetric gold particles and study their linear and second-order nonlinear optical properties.

TL;DR: Wire-grid polarizers for terahertz region were fabricated by manufacturing triangular grating using a ruling-based, ultraprecision diamond machining process and replicating the pattern into polymethylpentene and cyklo-olefin copolymer sheets using hot embossing.

TL;DR: In this paper, an aluminum grating with period close to the incident wavelength is designed and experimentally evidenced to exhibit a pronounced inverse polarizing effect in the deep ultraviolet band, and the main contributor to the inverse polarising effect is the excitation of surface plasmons on the front surface of the grating.

TL;DR: Developed highly chirped broadband fiber Bragg gratings and suspended-core fibers are shown to offer flexible dispersion management and allow for femtosecond oscillators with transform-limited pulse quality.