Ultrathin Metal–Organic Framework: An Emerging Broadband Nonlinear Optical Material for Ultrafast Photonics. Issue 16 (17th June 2018)

• Record Type: Journal Article
• Authors: Jiang, Xiantao; Zhang, Liangjing; Liu, Shunxiang; Zhang, Yiyue; He, Zhiliang; Li, Wenjia; Zhang, Feng; Shi, Yihuang; Lü, Wei; Li, Yu; Wen, Qiao; Li, Jiagen; Feng, Jun; Ruan, Shuangchen; Zeng, Yu‐Jia; Zhu, Xi; Lu, Yuerui; Zhang, Han
• Is Part Of: Advanced optical materials. Volume 6:Issue 16(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-06-17
• Subjects: femtosecond lasers -- metal–organic frameworks -- mode locking -- Ni‐MOF -- optical nonlinearity; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.201800561
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract: Crystalline porous metal–organic frameworks (MOFs) with nanometer‐sized void spaces, large surface areas and ordered reticular motifs have offered a platform for achieving disruptive successes in divisional fields. Great progress in exploring the linear and nonlinear optical features of MOFs has been achieved, yet third‐order optical nonlinearities in two‐dimensional (2D) MOFs have rarely been studied. Here, a broadband nonlinear optical amplitude modification and phase shift are demonstrated in a few‐layer nickel‐ p ‐benzenedicarboxylic acid MOF (Ni‐MOF). The calculated bandgap of Ni‐MOF decreases from 3.12 eV to 0.85 eV as the doping of Ni ions increases, indicating the ability of this material to be used for optical amplitude modulation from the visible to the near‐infrared region, which is experimentally confirmed via a Z‐scan technique. The determined third‐order optical nonlinearities resemble those of other low‐dimensional nonlinear optical materials, suggesting the wide potential of Ni‐MOF for application in optoelectronics. As an example, a Ni‐MOF‐based saturable absorber was implemented into fiber resonators to demonstrate its broadband mode‐locking operations. A femtosecond laser pulse was readily obtained in the telecommunication wavelength window in an integrated all‐fiber resonator. Considering the chemical compatibility and rich variability, these primary investigations pave the way towards advanced photonics based on multifeature MOF materials. Abstract : The great degree of freedom in the design and synthesis of metal–organic frameworks (MOFs) have empowered numerous potential applications. Herein, one 2D crystalline MOF with excellent broadband nonlinear optical responses is systematically investigated, and its use in integrated ultrafast photonics is exemplified. This original investigation may uncover partial veil of MOFs' nonlinear optical features and suggests their use in advanced 2D photonics.