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. 2016 Jul 26;6:30138. doi: 10.1038/srep30138

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Copyright © 2016, The Author(s)

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(a–d) Target images. (e) Demonstration of lasing by the device with d = 0.04a using a driving current of 1.5 A under continuous-wave operation at room temperature (25 °C). The beam pattern was observed on an IR-conversion screen without any lens or scanning system. (f–j) Far-field patterns measured by a beam profiler ((f) characters spelling “iPM Lasers”; (g) grid pattern; (h) multi-spot beam; (i,j) photographic images). The detailed measurement conditions are described in the Methods section.