InAs-based interband cascade lasers(ICLs)with InAs plasmon waveguides or InAs/AlSb superlattice(SL)waveguides were demonstrated at emission wavelengths below 4.1μm.The threshold current densities of the lasers with S...InAs-based interband cascade lasers(ICLs)with InAs plasmon waveguides or InAs/AlSb superlattice(SL)waveguides were demonstrated at emission wavelengths below 4.1μm.The threshold current densities of the lasers with SL waveguides were 37 A/cm;at 77 K in continuous wave mode.The operation temperature of these lasers reached room temperature in pulsed mode.Compared with the thick InAs n++plasmon cladding layer,the InAs/AlSb superlattice cladding layers have greater advantages for ICLs with wavelengths less than 4μm even in InAs based ICLs because in the short-wavelength region they have a higher confinement factor than InAs plasmon waveguides.展开更多
基金Project supported by the National Natural Science Foundation of China(Nos.61790583,61774150,61774151)the National Basic Research Program of China(No.2014CB643903)
文摘InAs-based interband cascade lasers(ICLs)with InAs plasmon waveguides or InAs/AlSb superlattice(SL)waveguides were demonstrated at emission wavelengths below 4.1μm.The threshold current densities of the lasers with SL waveguides were 37 A/cm;at 77 K in continuous wave mode.The operation temperature of these lasers reached room temperature in pulsed mode.Compared with the thick InAs n++plasmon cladding layer,the InAs/AlSb superlattice cladding layers have greater advantages for ICLs with wavelengths less than 4μm even in InAs based ICLs because in the short-wavelength region they have a higher confinement factor than InAs plasmon waveguides.
