Jian Fan, Xuyan Zhou, Weiqiao Zhang, Yufei Wang, Hongwei Qu, Aiyi Qi, Wanhua Zheng. Improving the performance of high-power broad-area lasers by suppressing cavity modes propagating in the lateral dimension[J]. Chinese Optics Letters, 2023, 21(4): 041406
- Chinese Optics Letters
- Vol. 21, Issue 4, 041406 (2023)
Fig. 1. (a) Schematic diagram of SSC laser. The inset is the scanning electron microscope (SEM) image of the fabricated SSC structure. (b) Sketch of a rectangular F–P cavity of length L and width W. The wave vector can be separated into longitudinal and lateral components klo and kla, respectively.
Fig. 2. The typical lateral oscillation mode distribution in the F–P cavity and the SSC cavity. The width is 40 µm, and the length is 50 µm; both the width and length of the triangle are 2 µm.
Fig. 3. Calculated Q-factors of the lateral propagating modes in the SSC cavity (black dots) and the F–P cavity (red dots).
Fig. 4. (a) L-I-V characteristic curves of the four types of lasers measured at room temperature under the CW operation; (b) three microstructures with different sizes.
Fig. 5. The ASE spectrum of the SSC lasers and the standard BA lasers at (a) 1.5 A and (b) 2.3 A, respectively.
Fig. 6. Measured L-I-V curves and WPE as functions of the operating current of SSC lasers (solid line) and standard BA lasers (dotted Line) in CW mode at 0°C.
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