In the inaugural 2026 issue of Advanced Photonics, the flagship journal published by the Chinese Laser Press, the innovative research achievements of the Qin Yingxiong-Xu Gang-Tang Xiahui team in the realm of next-generation holographic digital lasers were unveiled. This team, for the very first time, introduced a holographic resonator (dubbed HoloCavity) that is grounded in an inverse Fox-Li design framework. By actively manipulating the wavefront of cascaded pure-phase holograms and modulating diffraction losses during extended free-space propagation, the team successfully achieved concurrent self-reproduction and suppression of multiple chiral modes, all without relying on auxiliary non-planar optical elements.

This groundbreaking approach has the potential to emerge as a universal design paradigm for digital laser resonators, effectively overcoming a significant obstacle that has hindered the practical application of structured light laser sources. The HoloCavity accomplishes mode regulation through pure-phase modulation, a process that does not introduce direct losses. Instead, it meticulously reshapes the beam's complex amplitude by employing customized diffraction losses, thereby enabling the direct generation of tailored complex modes.

Experimental validation has yielded remarkable results, demonstrating a three-order-of-magnitude reduction in the mean square error of the target mode, with fidelity levels approaching unity. Moreover, the power of non-target modes experiences a substantial decay of approximately 30 dB after just 20 transits. This milestone achievement not only bolsters free-space communication capabilities but also paves the way for on-demand customization of high-quality light sources, catering to the needs of optical trapping and microscopic imaging technologies.