Fig. 1. （a）Traditional Fabry-Perot cavity laser，（b）scheme of a Fabry-Perot cavity constituted of LHMs and ZIMs slabs，（c）and（d）the geometric optical-path of the radiation field emitted by the atoms，（c）atom is located in the center of the cavity，（d）atom is placed at（0，0，λ₀），the black short arrow refers to atom

Fig. 2. （Color online）The radiated electric field distribution by atomic when the electric point dipole is located in the center of the cavity（a）or located at（0，0，λ₀）in the cavity（c）. Far-field distribution of various radiation angles in the x-z plane is shown in（b）and（d），respectively. The white dotted lines in（a）and（c）refer to the interfaces between different materials

Fig. 3. （Color online）The normalized expect value of atomic radiative electric field in logarithmic function（a）the atom is placed at r_a=（0，0，0），（b）the atom is placed at r_a=（0，0，λ₀），the common parameters are the same to these in Fig. 2

Fig. 4. （Color online）The radiative field distribution of an electric dipole placed in the middle of the structure constituted by two-dimensional P C. The operating wavelength is λ=1 500nm

Fig. 5. （Colour online）. Lasing actions in the NIMs-ZIMs structures，（a）emission spectra of the NIMs-ZIMs cavity vary with input pump amplitude and wavelength，（b）emission spectra linewidth varies with pump amplitude

Fig. 6. （Colour online）Maximum emission intensity varies with the input pump amplitude，black dashed and red solid lines represent individual ZIMs and NIM-ZIM structure，respectively