Abstract
This study demonstrated mechanical wavelength fine-tuning of a flexible
photonic crystal (PhC) laser. A triangular PhC structure was fabricated in
an InGaAsP layer on top of a polydimethylsiloxane substrate. Experiments showed
two lasing modes at symmetry points K and M in the first PhC band. The laser
structure was bent along the Γ-M direction and the lasing wavelength was fine-tuned by
varying the bending radius. The lasing wavelength shift is attributed to PhC
lattice distortion and its tuning behavior corresponds with the simulation
results. This ultra-small, wavelength-tunable laser could function as a unique
light source for integrated optoelectronic circuits.
© 2013 IEEE
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