Harith Ahmad, Muhammad Khairol Annuar Zaini, Zulkifli Mahmoodin, Saliha Mutlu, Volkan Filiz, Sevil Savaskan Yilmaz, Nergis Arsu, Mohamad Akmal Mohamad Lutfi, Kavintheran Thambiratnam, Bulend Ortac
A new carborane-containing metal-organic framework (Cb Ni-MOF) was synthesized using a high-power laser-assisted method. The material was prepared from Nickel(II) chloride hexahydrate (NiCI2 ⋅ 6 H2O) and m-carborane-1,7-dicarboxylic acid (Cb). FTIR spectroscopy-based structural analysis confirmed successful coordination between the carborane carboxylate groups and Ni(II) ions. SEM-based morphological description revealed 200 nm to 1 µm-sized polyhedral particles, indicating a crystalline and porous nature. TEM images further revealed nanoscale crystallinity with particle diameters around 50 nm, together with single-/polycrystalline structures with identical features. These findings demonstrate that the laser-assisted process is efficient for preparing nano-ordered, highly crystalline Cb-based MOFs. In this work, the generation of a high-performance ultrafast fiber laser system at the 2-µm wavelength region was demonstrated. The system utilized a passively mode-locked oscillator incorporating a Cb Ni-MOF deposited on an arc-shaped fiber, demonstrating exceptional nonlinear optical properties with 14.1% modulation depth and 11.2 MW/cm2 saturation intensity. The laser oscillator generated ultrashort pulses with a duration of 1.2 ps at a center wavelength of 1942.9 nm. Using a chirped pulse amplification (CPA) technique with pre-amplification and main amplification stages, the high-power fiber laser achieves remarkable performance characteristics: 8.4 W average output power, 264 fs pulse duration, 433 nJ pulse energy, and 1.64 MW peak power at 19.4 MHz repetition rate. This high-power ultrafast fiber laser system shows significant potential for applications in invasive medical procedures, advanced material processing, and other fields requiring precise and high-intensity laser-matter interactions. © 1965-2012 IEEE.
Universiti Malaya, Photonics Research Centre, Kuala Lumpur, 50603, Malaysia; Universiti Kuala Lumpur British Malaysian Institute, Universiti Kuala Lumpur, Selangor, Kuala Lumpur, 53100, Malaysia; Universitas Negeri Malang, Faculty of Mathematics and Natural Sciences, Department of Physics, Malang, 65145, Indonesia; Medical Engineering Technology Section, British Malaysian Institute (UniKL BMI), Universiti Kuala Lumpur, Selangor, Kuala Lumpur, 53100, Malaysia; Karadeniz Technical University, Department of Chemistry, Trabzon, 61080, Turkey; Bilkent University, National Nanotechnology Research Center (UNAM), nstitute of Materials Science Nanotechnology, Ankara, 06800, Turkey; Institute of Membrane Research, Helmholtz-Zentrum Hereon, Geesthacht, 21502, Germany; Yıldız Technical University, Department of Chemistry, Davutpasa Campus, İstanbul, 34220, Turkey; International Islamic University of Malaysia, IPQC, Kulliyyah of Science, Physics Department, Pahang, Kuantan, 25200, Malaysia
