Stretching-tunable external-cavity laser locked by an elastic silicone grating | Zendy

Stefano Bertani | Zendy; Björn Jacobsson | Zendy; Fredrik Laurell | Zendy; Valdas Pašiškevičius | Zendy; Mårten Stjernström | Zendy

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Stretching-tunable external-cavity laser locked by an elastic silicone grating

Author(s) -

Stefano Bertani,

Björn Jacobsson,

Fredrik Laurell,

Valdas Pašiškevičius,

Mårten Stjernström

Publication year - 2006

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.14.011982

Subject(s) - materials science , optics , grating , polydimethylsiloxane , laser , distributed feedback laser , diffraction grating , silicone , optoelectronics , longitudinal mode , blazed grating , wavelength , diffraction efficiency , diffraction , composite material , physics

We demonstrate wavelength locking of a diode laser at 760 nm with feedback from an elastic transmission grating in the Littrow configuration. The laser was in a single longitudinal mode with a side-mode suppression of 20 dB. By stretching the grating the laser could be tuned over a few nm. The grating was fabricated in a silicone elastomer (polydimethylsiloxane) by a moulding technique, and coated by a thin layer of Ti and Au to achieve an increased diffraction efficiency needed for efficient locking.

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