In-junction-plane beam divergence stabilization by lateral periodic structure in wide-stripe laser diodes

Maląg, A.; Sobczak, Grzegorz; Dąbrowska, E.; Teodorczyk, M.

doi:10.3934/electreng.2019.4.370

Cited by 1 publication

(1 citation statement)

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“…Reducing the width of the emitter to decrease the number of modes [9], and a consistent gain profile throughout the contact region is advantageous for enhancing optical field stabilization by employing structures that tailor the gain or optimize the current path. Examples of such structures include the phase-locked array, multi-stripe gain structure, or current modulation structure [10], [11], [12]. The effective enhancement of beam quality can be achieved through the successful mitigation of lateral carrier accumulation via deep proton implantation [13].…”

Section: Introductionmentioning

confidence: 99%

Improved Far-Field Angle in Narrow-Ridge High-Power Laser Diodes Using a Double Stripe Structure

Kim,

Yang,

Choi

et al. 2023

IEEE Photonics J.

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We propose a novel double stripe structure for achieving a narrow far-field angle without significant output power loss in narrow-ridge high-power broad-area laser diodes. By introducing double SiO2 stripes on the top side of the laser diode, we effectively suppress high-order modes through mode weight engineering. Through self-consistent electro-thermaloptical simulations powered by LASTIP with the well-verified model from the reference, we comprehensively analyze and compare the characteristics of high-power broad-area laser diodes utilizing the loss tailoring technique that adopted the much simpler structure compared to prior study and our proposed structure. Our results demonstrate a significant reduction of approximately 36% in the far-field angle while maintaining slope efficiency. This approach shows promise for enhancing the performance of coupling efficiency between narrow-ridge highpower laser diodes and fibers.

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