Wavelength Tunable Pulsed Lasers Enabled by a Versatile Metafiber Functioning as Both Saturable Absorber and Filter. - Fu, Bo; Zhang, Chenxi; Zhang, Zhouqi; Ouyang, Zuxi; Wang, Gang; Jing, Xiuhan; Chen, Weilin; Zhang, Lei; Qiu, Min (Advanced Science, 2026)