设计并制备了基于双边非1/4波长布拉格反射波导的边发射半导体激光器, 中心腔采用低折射率材料, 在垂直方向利用布拉格反射进行光限制, 实现了超大光斑尺寸且稳定单横模工作。10 μm条宽、未镀膜的脊型激光器在准连续和连续工作方式下的总的输出功率分别超过了170 mW和80 mW, 且最高功率受热扰动限制。激光器远场图案在垂直方向为双瓣状, 单瓣垂直方向和水平方向发散角分别低至7.85° 和6.7°。激射谱半高全宽仅为0.052 nm, 光谱包络存在周期性调制现象, 模式间隔约为3.3 nm。电流增加到300 mA以上时, 激光器出现模式跳变。

The continuous-wave single-mode operation of edge-emitting diode laser based on dual-sided non-quarter-wave Bragg reflection waveguide (BRW) was demonstrated at room temperature. A low-index core was utilized in the laser. The ridge BRW lasers (BRLs) exhibited an ultra-narrow twin-beam output. Single longitudinal mode emission with a very small spectral linewidth of 0.052 nm was measured. The lasing spectra showed a periodic modulation in the envelope with a mode spacing of approximately 3.3 nm. When the injection current of the BRLs was beyond 300 mA, a large mode hopping of the emission wavelength was observed.