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URN: urn:nbn:de:swb:90-459378

Shape-memory polymers as flexible resonator substrates for continuously tunable organic DFB lasers

Schauer, S.; Liu, X.; Worgull, M.; Lemmer, U.; Hölscher, H.

We introduce shape-memory polymers (SMP) as substrate material for active optical devices. As an exemplary application we build a tunable organic semiconductor distributed feedback (DFB) laser. Hence, we transfer a second order Bragg grating with a period of 400 nm into SMP foils by hot embossing. The composite organic gain medium Alq3:DCM evaporated on the SMP substrate serves as laser active material. Mechanical stretching of the substrate increases the grating period temporarily and triggering the shape-memory effect afterwards reduces the period on demand. In this way, we can adjust the grating period to achieve a broad continuously tuning of the laser emission wavelength by 30 nm.

Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Karlsruhe Nano Micro Facility (KNMF)
Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2015
Sprache Englisch
Identifikator ISSN: 2159-3930
KITopen ID: 1000045937
HGF-Programm 43.22.01; LK 01
Erschienen in Optical materials express
Band 5
Heft 3
Seiten 576-584
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
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