Fig. 1. Principle diagram of central radiative structure cooler

Fig. 2. Microchannel structure of central radiative structure cooler

Fig. 3. Axial deformation and maximum normal stress of gain medium versus thickness of heat transfer layer

Fig. 4. Axial deformation and maximum normal stress of gain medium versus channel height

Fig. 5. Axial deformation and maximum normal stress of gain medium versus inlet diameter

Fig. 6. Surface temperature distribution of gain medium in central radiative structure cooler

Fig. 7. Axial deformation of gain medium in central radiative structure cooler

Fig. 8. Tree-shaped microchannel cooling structure

Fig. 9. Surface temperature distribution of gain medium in tree-shaped microchannel cooler

Fig. 10. Axial deformation of gain medium in tree-shaped microchannel cooler

Fig. 11. Experimental platform of cooler

Fig. 12. Wavefront distortion of gain medium in tree-shaped microchannel cooler

Fig. 13. Wavefront distortion of gain medium in central radiative structure cooler