Phase-locked antimonide diode laser array with Talbot cavity

Achieving power scaling while maintaining high beam quality remains a key challenge for laser arrays. In this work, we demonstrate an antimonide phase-locked laser array integrated with a Talbot cavity based on a diffraction-coupling scheme. A seven-element phase-locked laser array was designed and fabricated, achieving a maximum power of 812 mW under continuous-wave (CW) operation at 288 K. The measured lateral far field exhibits a near diffraction limited (D.L.) beam divergence of 1.86° and dominant in-phase mode operation from the threshold current to full power current, confirming stable supermode selection capability. Benefiting from robust supermode control, efficient thermal management, and high fabrication tolerance, the phase-locked array shows great potential for high-brightness laser sources.