Hossein Masalehdan

Optical Microsystems group, MEMS Unit

• Designed and built ultrawide pressure sensor by using High Q mechanical resonators and optical interferometric read-out (Filed for an EU patent and currently developing a prototype). • Fabrication of noise-less optical detectors. • Design, built, and control of Ultra-High-Vacuum (UHV) systems. • Mentoring a master student to implement a fibre optic Michelson interferometer (1550nm) for temperature sensing.

• Designed a Michelson interferometer in combination of squeezed light to implement quantum tomographic scheme for measuring the radiation pressure of light coupled to a mechanical resonator below the Standard Quantum Limit (SQL) at room temperature. • Large-scale data analysis and collaboration for LIGO/Virgo gravitational wave detectors. • Designed and investigated the modifications towards enhancing the interferometric sensitivity. • Mentored a Master thesis towards building Mach–Zehnder interferometer

At Kavli Institute of Nanoscience, TU-Delft, Delft, Netherlands. • Built a Michelson interferometer with bright light scan for investigating the mechanical resonators. • Designed, simulated high Q phononic shield mechanical resonators, and subsequently fabricated them at TU Delft’s clean room.

• Contributed in the preparation of organometal halide perovskite samples' nonlinear optical properties in solutions.

At Advanced Laser Physics Lab: • Led the experimental effort to build an optical setup (based on Moiré interferometry with 660nm) to measure highly precise 3rd order optical nonlinearities in polymeric thin films.

At Smart Photonic Materials Lab. • Contributed to developing various synthesizing methods to get pure, stable, and size-tunable Graphene Quantum Dots from various types of precursors. • Designed experiments to investigate pre & post-functionalized GQDs-based colloidal and thin-films optical properties (luminescence mechanisms), the strong third-order nonlinearity by the aim of an ultrashort pulse laser in a Z-scan setup.

At Advanced Laser Physics Lab. • Contributed to investigating Ultrashort pulse lasers interaction mechanisms for Micro/Nano-fabrication. • Designed & built various optical setups (interferometry, scanning, & imaging) for investigating Nonlinear Optical properties. • Theoretical modeling of nanophotonic devices based on 1D Photonic Crystals (PCs), and Metamaterials. • PI and Co-PI in various projects, from preparing grant applications to performing research, writing reports and presentations at conferences.

• Co-PI of three theoretical projects to design and investigate the optical and electronic properties of 1D Photonic crystals (PCs), and Metamaterials. • Co-supervised four BSc thesis in the scope of laser applications in medicine and dentistry. • Scientific team leader for transferring the technology into industry.

• Implemented systematic analysis for wavelength and intensity impact on biomass. • Mentored two students to design and build a table-top setup to investigate light-biomass interactions.

Technology Transfer Consultant for nuts factories, Iran and Turkey. • I gave consulting services to various nuts factories to upgrade their quality and safety production lines by equipping laser scanners to achieve the required ISO certificates for exporting products

• Developed a theoretical model for simulating the higher orders of eye optical aberrations and we used this method for patients before and after refractive surgeries. • Theoretical investigation of ultra-short pulse lasers penetration depth vs. heating for cornea nano-surgeries.

• Co-funded a company to produce cardboard boxes from recycled paper. • Designed the production lines, from ordering to implementing, and production in 2000m2 area. • Tutored the various machines operators, and optimized the production process.

• Organised and tutored laser workshops (20 hours) for medical students. • Consultant for the surgery department to equip suitable laser devices, and demonstrated devices operations.

• Carried out interdisciplinary research together with dentists. • Synthesized various size gold nanoshells for drug delivery applications. • Investigated early-stage diagnosis of cancerous cells in gum lesions with the aim of pump-probe spectroscopy.

• Co-Organized scientific conferences, and workshops for the students. • Re-structured the membership procedure to expand the beneficial access for more students.

Experimental Quantum Optics

MSc in Physics, specialised in Optics & Laser, With minor in Chemistry of Nanomaterials. Visiting scholar at Tampere University of Technology, Tampere, Finland

Specialized in Optics & Laser Minor in Biomedical Engineering (biomaterials)