Compact, integrable, and long life time Raman multiline UV-Vis source based on hypocycloid core Kagome HC-PCF

M. Chafer; Q. Lekiefs; A. Gorse; B. Beaudou; B. Debord; F. Gérôme; F. Benabid

doi:10.1117/12.2251857

20 February 2017 Compact, integrable, and long life time Raman multiline UV-Vis source based on hypocycloid core Kagome HC-PCF

M. Chafer, Q. Lekiefs, A. Gorse, B. Beaudou, B. Debord, F. Gérôme, F. Benabid

Author Affiliations +

Proceedings Volume 10088, Nonlinear Frequency Generation and Conversion: Materials and Devices XVI; 1008805 (2017) https://doi.org/10.1117/12.2251857
Event: SPIE LASE, 2017, San Francisco, California, United States

Abstract

Raman-gas filled HC-PCF has proved to be an outstanding Raman-convertor, as illustrated by the generation of more than 5 octaves wide Raman comb using a hydrogen-filled Kagome HC-PCF pumped with high power picosecond-laser, or the generation of multiline Raman-source in the UV-Vis using a very compact system pumped with micro-chip laser. Whilst these demonstrations are promising, a principal challenge for the industrialization of such a Raman source is its lifetime as the H₂ diffusion through silica is high enough to leak out from the fiber within only a few months. Here, we report on a HC-PCF based Raman multiline source with a very long life-span. The system consists of hydrogen filled ultra-low loss HC-PCF contained in highly sealed box, coined CombBox, and pumped with a 532 nm micro-chip laser. This combination is a turnkey multiline Raman-source with a "shoe box" size. The CombBox is a robust and compact component that can be integrated and pumped with any common pulsed laser. When pumped with a 32 mW average power and 1 ns frequency-doubled Nd:Yag microchip laser, this Raman-source generates 24 lines spanning from 355 to 745 nm, and a peak power density per line of 260 mW/nm for the strongest lines. Both the output power and the spectrum remained constant over its monitoring duration of more than six months. The spectrum of this multiline laser superimposes with no less than 17 absorption peaks of fluorescent dyes from the Alexa Fluor family used as biological markers.

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M. Chafer, Q. Lekiefs, A. Gorse, B. Beaudou, B. Debord, F. Gérôme, and F. Benabid "Compact, integrable, and long life time Raman multiline UV-Vis source based on hypocycloid core Kagome HC-PCF", Proc. SPIE 10088, Nonlinear Frequency Generation and Conversion: Materials and Devices XVI, 1008805 (20 February 2017); https://doi.org/10.1117/12.2251857

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