Abstract
We demonstrate one-dimensional nanobeam photonic bandedge lasers with InGaAsP quantum wells at room temperature from the lowest dielectric band of photonic crystal nanobeam waveguides. The incident optical power at threshold is 0.6 mW (effectively ~18 μW). To confirm the lasing from the dielectric bandedge, the polarization and the photoluminescent spectra are taken from nanobeams of varying lattice constants. The observed shift of the lasing wavelength agrees well with the computational prediction.
Highlights
Photonic Crystals (PhCs) provide versatile wavelength-scale optical platforms for photon control [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]
We demonstrate one-dimensional nanobeam photonic bandedge lasers with InGaAsP quantum wells at room temperature from the lowest dielectric band of photonic crystal nanobeam waveguides
Their small physical size is a benefit for the photonic integrated circuits
Summary
Photonic Crystals (PhCs) provide versatile wavelength-scale optical platforms for photon control [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]. One-dimensional (1-D) PhC structure was proposed by Notomi et al [17] Using this nano-ladder configuration, very small 1-D nanocavities having Qs of several hundreds of thousands were demonstrated [18,19,20] and cavity QED effects were successfully observed [21]. Lowthreshold nanobeam lasers were realized in the air and in the water and glass backgrounds [24,25,26,27] In these examples, photons are confined tightly in a small region near the cavity and the high electric field of the resonator can be used for optical trapping experiments [28, 29]. The small device volume leads to lasing at low threshold
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