Continuous-wave emission from midinfrared IV–VI vertical-cavity surface-emitting lasers
Continuous-wave emission from midinfrared IV–VI vertical-cavity surface-emitting lasers
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中红外 IV-VI 垂直腔表面发射激光器的连续波发射
DOI：
10.1063/1.1719277
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发表时间：
2004
影响因子：
4
通讯作者：
W. Heiss
中科院分区：
文献类型：
--
作者：
J. Fürst;H. Pascher;T. Schwarzl;M. Böberl;G. Springholz;G. Bauer;W. Heiss
报道了两种垂直腔面发射结构的中红外PbSe激光器的连续波发射。对于这两种结构，在约7.9 μm的波长处观察到光泵连续激光发射。受激发射的温度高达80 K。我们实现了内部阈值泵浦强度下降到25 W/cm 2，这是两个数量级小于迄今为止报道。激光发射的线宽仅为18 μeV（0.9 nm），与腔共振的线宽相比具有很强的窄化。连续波输出功率高达350 μW。
Continuous-wave emission of two midinfrared PbSe vertical-cavity surface-emitting laser structures is presented. For both structures, optically pumped cw laser emission is observed at a wavelength of about 7.9 μm. Stimulated emission is found up to temperatures of 80 K. We achieved internal threshold pump intensities of down to 25 W/cm2, which is two orders of magnitude smaller than reported so far. The linewidth of the laser emission is only 18 μeV (0.9 nm) with a strong narrowing as compared to the linewidth of the cavity resonance. Continuous-wave output powers are up to 350 μW.