Lateral-Current-Injection Distributed Feedback Laser With Surface Grating Structure

Lateral-Current-Injection Type Membrane DFB Laser With Surface Grating

“…Fig. 2 (a) shows LCI-DFB laser on SI-InP substrate we demonstrated previously [17], and Figs. 2(b) and 2(c) show those of membrane lasers with the total core layer thickness of 450 nm and 200 nm, respectively.…”

“…In this letter, we introduced surface grating structure [16], [17] and demonstrated much lower threshold current operation of the LCI membrane laser. Figure 1 shows a schematic structure of the fabricated LCImembrane-DFB laser with a surface grating structure, where the total core layer thickness was about 450 nm, and the top and bottom cladding layers were composed of air (n = 1) and SiO 2 (n = 1.45), respectively.…”

“…Therefore, internal quantum efficiency η i of the fabricated LCI-membrane laser is thought to be less than 10%, and the threshold current is expected to be 9.2 mA. In order to suppress such non-radiative recombination, we already reported some novel core structures suited for LCI-membrane lasers and can expect their highly-efficient operations with η i of around 70% [16], [17]. Furthermore, poor lasing characteristics are attributed to poor a BCB bonding process since air voids were trapped in the bonding interface which might have resulted in large waveguide loss.…”

Three-dimensional two-photon laser fabrication for metals, polymers, and magneto-optical materials

“…A lower threshold current operation could be expected with these effects that lead to ultralow power consumption. Due to the insulation property of the cladding layers in this structure, a lateral current injection structure should be introduced in order to achieve electric excitation [30]. In terms of Fabry-Perot (FP) laser, the induced light is directly emitted from the facet of the active region.…”

Optical interconnection between III–V chips on Si by using photonic wire bonding

“…Here we demonstrate direct optical interconnection between a GaInAsP/InP lateral-current-injection (LCI) laser and a detector [5][6] which were mounted on Si substrate by Benzocyclobutene (BCB) adhesive bonding and succeeded 150-via PWB with connection loss around 10dB. Fig.…”