Recent Developments in High Power Semiconductor Diode Lasers

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

“…IGH-power laser diodes (HPLDs) are widely used as the pumping source for many types of high-power lasers for various applications such as military, industrial, and consumer usage. It has its advantages in high electrical efficiency, low cost, and small size [1], [2], [3]. However, their performances suffer from self-heating, which causes the thermal rollover resulting in limited maximum output power and far-field (FF) blooming causing reduced pump beam coupling efficiency [4].…”

High-power broad-area laser diode performance improvement with a double pedestal structure

“…High-power broad-area semiconductor laser diodes are widely used as the pumping source for various types of high-power lasers for military, industrial, commercial, and consumer applications due to their advantages in high efficiency, low cost, and small size. [1][2][3] However, their performances can suffer from self-heating, which causes the thermal rollover resulting in the limited maximum output power and the farfield blooming causing the reduced pump beam coupling efficiency. 4) Previous studies have shown that thermal lensing [5][6][7][8] due to the lateral refractive index gradient causes generation of higher-order lateral modes and narrowing of the near-field profile of each guided mode resulting in the far-field blooming.…”