Tunable external-cavity semiconductor laser using monolithically integrated tapered amplifier and grating coupler for collimation
Tunable external-cavity semiconductor laser using monolithically integrated tapered amplifier and grating coupler for collimation
复制标题
使用单片集成锥形放大器和光栅耦合器进行准直的可调谐外腔半导体激光器
DOI：
10.1109/68.896322
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发表时间：
2000
影响因子：
2.6
通讯作者：
A. Larsson
中科院分区：
文献类型：
--
作者：
M. Uemukai;T. Suhara;K. Yutani;N. Shimada;Y. Fukumoto;H. Nishihara;A. Larsson
提出并实现了一种新型的无透镜可调谐外腔激光器，该激光器采用单片集成的锥形放大器、光栅耦合器（GC）和外半反射镜。它可以通过简单的工艺制造，并发射准直输出光束。通过利用GC的波长色散，可以对激射波长进行角度调谐。在连续波操作下，实现了在21.5 nm的宽范围内的波长调谐4.5/spl度/器件旋转和84 mW的输出功率。在整个调谐范围内保持具有小至0.3/spl deg/的发散角的良好准直的输出光束。
A novel lensless tunable external-cavity laser using monolithically integrated tapered amplifier, grating coupler (GC) and an external half mirror is proposed and demonstrated. It can be fabricated by a simple process and emits a collimated output beam. By making use of wavelength dispersion of the GC, the lasing wavelength can be angle tuned. Wavelength tuning over a wide range of 21.5 nm by 4.5/spl deg/ device rotation and an 84-mW output power were achieved under continuous-wave operation. A well-collimated output beam with a divergence angle as small as 0.3/spl deg/ was maintained over the entire tuning range.