Distributed feedback ridge waveguide lasers fabricated by CNP process

Becker, Jing; Cehovski, Marko; Caspary, Reinhard; Kowalsky, Wolfgang; Mueller, Claas

doi:10.1016/j.mee.2017.07.002

Cited by 5 publications

(1 citation statement)

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“…Since higher modes propagate with different speed of light and have different evanescent wave characteristics, this leads to an inefficient interferometric interaction in the sensor as well as signal losses due to modal dispersion [1]. Recently Becker et al [7] integrated DFB gratings onto a 2.0 m in width and 2.5 m in height few-mode ridge waveguide. This is realized by a straightforward combined nanoimprint and photolithography process (CNP process) using OrmoCore, a silicon-containing hybrid waveguide core material.…”

Section: Introductionmentioning

confidence: 99%

Single-Mode Polymer Ridge Waveguide Integration of Organic Thin-Film Laser

et al. 2020

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Organic thin-film lasers (OLAS) are promising optical sources when it comes to flexibility and small-scale manufacturing. These properties are required especially for integrating organic thin-film lasers into single-mode waveguides. Optical sensors based on single-mode ridge waveguide systems, especially for Lab-on-a-chip (LoC) applications, usually need external laser sources, free-space optics, and coupling structures, which suffer from coupling losses and mechanical stabilization problems. In this paper, we report on the first successful integration of organic thin-film lasers directly into polymeric single-mode ridge waveguides forming a monolithic laser device for LoC applications. The integrated waveguide laser is achieved by three production steps: nanoimprint of Bragg gratings onto the waveguide cladding material EpoClad, UV-Lithography of the waveguide core material EpoCore, and thermal evaporation of the OLAS material Alq3:DCM2 on top of the single-mode waveguides and the Bragg grating area. Here, the laser light is analyzed out of the waveguide facet with optical spectroscopy presenting single-mode characteristics even with high pump energy densities. This kind of integrated waveguide laser is very suitable for photonic LoC applications based on intensity and interferometric sensors where single-mode operation is required.

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Section: Introductionmentioning

confidence: 99%