Single-frequency, single-spatial-mode ROW-DFB diode laser arrays
Single-frequency, single-spatial-mode ROW-DFB diode laser arrays
复制标题
DOI：
10.1109/68.484234
复制
发表时间：
1996-02
影响因子：
2.6
通讯作者：
M. Nesnidal;L. Mawst;A. Bhattacharya;D. Botez;L. DiMarco;J. Connolly;J. Abeles
中科院分区：
文献类型：
--
作者：
M. Nesnidal;L. Mawst;A. Bhattacharya;D. Botez;L. DiMarco;J. Connolly;J. Abeles
结合二阶分布式反馈光栅（即 ROW-DFB 阵列）的谐振反导锁相 InGaAs-InGaP-GaAs 二极管激光器阵列演示了大孔径 (40-60 /spl mu/m) 折射率引导器件的单频、稳定单空间模式操作。该器件在高达 3.6/spl 次/阈值的单空间模式下运行，并且在高达 2/spl 次/阈值的真正单模（即单空间模式和单频）下运行，对于 40 (60)-/spl mu/m 孔径 10 元件阵列，波束图案是同相的，并且在 70% (75%) 的功率下受到衍射限制驻留在主瓣。单频操作从 9640-9652 /spl Aring/ 获得，在大约 20/spl deg/C 的温度范围内，记录的边模抑制比 /spl ges/20 dB 高达 2/spl 次/阈值。
Single-frequency, stable single-spatial-mode operation from large-aperture (40-60 /spl mu/m) index-guided devices is demonstrated from resonant antiguided phase-locked InGaAs-InGaP-GaAs diode-laser arrays incorporating 2nd-order distributed-feedback gratings (i.e., ROW-DFB arrays). The devices operate in a single-spatial-mode up to 3.6/spl times/threshold, and truly single-mode (i.e., single-spatial-mode and single-frequency) up to 2/spl times/threshold, For 40 (60)-/spl mu/m-aperture 10-element arrays, the beam pattern is in-phase and diffraction-limited with 70% (75%) of the power residing in the main lobe. Single-frequency operation is obtained from 9640-9652 /spl Aring/, over a temperature range of approximately 20/spl deg/C, side-mode suppression ratios /spl ges/20 dB are recorded up to 2/spl times/threshold.