Laser action using non-coupled excitation and detection of microspheres made of Nd3+ doped barium-titanium-silicate glass has been demonstrated and measured. The microspheres have also been successfully deposited over Si3N4 strip waveguides with a SiO2 separation layer, thus enabling the laser emission extraction onto a CMOS compatible photonic circuit. The dynamics of the lasing wavelength and intensity has been studied as a function of the pump power and interpreted in terms of thermal effects generated through non-radiative recombination of the excited ions. © 2013 Astro Ltd.

The authors thank the Ministerio de Economía y Competitividad of Spain (MINECO) within the National Program of Materials (MAT2010-21270-C04-02/-03/-04), the Consolider-Ingenio 2010 Program (MALTA CSD2007-0045, www.malta-consolider.com), the EU-FEDER, the GICSERV NGG-268 for their financial support and ACIISI of Gobierno de Canarias for the project ID20100152 and FPI. DN-U acknowledges the financial support of Generalitat de Catalunya through the Beatriu de Pinòs program.

Peer Reviewed