About
Summary
Dr. Ramachandran Kasu, a Postdoctoral Fellow at the University of Idaho, USA., with dual postgraduate degrees in Physics and Laser and electro-optical Engineering, conducted Ph.D. research on all-fiber interferometers at IIITDM, Kancheepuram, India. I received guidance from Prof. Naveen Kumar and thesis evaluation from Prof. Gordon Flockhart from the University of Strathclyde, Glasgow, UK. My post-PhD expertise in various optical research fields has been published in reputable journals. As an experienced postdoctoral researcher with a physics and optical science background, I am deeply interested in optical engineering, bio/nano-photonics, Raman spectroscopy, optical metrology, laser optics, sensors, and fiber optic communication. I have a demonstrated history of developing experimental setups for advanced imaging, sensing, and spectroscopy, supervising students, and guiding them to contribute to scientific literature with several publications. My leadership abilities complement my skills in constructing optical systems, conducting interdisciplinary research, and leveraging technical skills for innovative optical and fiber-optic solutions.
Positions
Postdoctoral fellow Feb 2022 -
Department of Physics, University of Idaho
• Developed the experimental setup for Raman/fluorescence imaging based on single objective epi and near TIRF.
• Learn the techniques for preparing biological samples such as roots, cells, and particles for microscopy.
• Developed the experimental setup for Airy light sheet fluorescence imaging and Worked on the dark field, fluorescence, and photon sparse Poisson microscopy and photon sparse imaging.
• Exploring non-diffracting beams for ultrafast light sheet microscopy using femtosecond lasers and supervision of undergraduate and graduate students.
• Presented the work at conferences and published articles in PNAS; two manuscripts are in progress.
POSTDOCTORAL RESEARCH ASSOCIATE Oct 2018 - Jan 2022
National Center for Physical Acoustics, The University of Mississippi
• successfully employed a line scan CMOS camera in the laser multibeam interferometric setup to measure membrane vibrations.
• employ a polarization camera to detect the interference signal in the existing homodyne system.
• developed a heterodyne interferometer for vibration measurements.
• published an article in applied optics and optic letters. And one manuscript is in progress.
Research Associate Jul 2017 - Sep 2018
ACRHEM, University of Hyderabad
• This research focused on Raman spectroscopy, Absorption spectroscopy, and Terahertz imaging.
• Learned Terahertz generation, detection, imaging, and photoacoustic spectroscopy.
• Studied the interaction and charge transfer between materials using Raman and pulsed photoacoustic spectroscopy.
• Constructed an off-axis THz digital holography (THz-DH) system and advising undergraduate and graduate students.
• Presented the work at a conference and published an article in Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Postdoctoral fellow Jul 2016 - Apr 2017
Division of Mechanical System engineering, Chonbuk National University
• This research focused on optical metrology, interferometry-based imaging polarimetry, and dynamic ellipsometry snapshots.
• Developed a polarization-based Michelson interferometer to extract the phase of the transmissive object.
• Developed a MATLAB code extract phase using 2D FFT for extraction of the phase of the object.
• Worked on the dynamic Spectro-ellipsometry based on a spectral interferometric phase extraction method.
• Constructed a digital holography system and advising undergraduate and graduate students.
• Presented the work at various optics conferences.
Assistant professor Jul 2015 - Jun 2016
Department of Electrical engineering, MGM College of Engineering and Technology, Piravom
• Taught a course on engineering physics for students at the graduate level.
• Active institute promotion/outreach.
• Responsible for the student cultural and technical fest.
Doctoral Researcher Aug 2010 - May 2015
• Designed and employed concatenated fibre optic Mach-Zehnder and Fiber loop mirror system for gain flattening of EDFA.
• We have designed and prototyped a microcontroller-based electromechanical rig unit for tapered fiber geometry.
• A tapered fiber-based miniaturized Mach-Zehnder interferometer has been fabricated for Direct Current (DC) measurement.
• Handled a physics laboratory course and conducted lab work for engineering graduates.
• Presented the work at conferences and published articles in optics communications, optics, and laser technology, IEEE Sensors, Journal of Optics, Optical fiber technology, optic, etc.
Education
Indian Institute of Information Technology, Design and Manufacturing, Kancheepuram 2010 - 2015
Field of study: Fiber Optics
Degree: Doctor of Phylosophy
Course work: Optical fiber communication technology, Introduction to Photonics, Opto electronic devices and circuits, Techniques of Physics measurements
Department of Physics and Electrical Engineering
I.I.T. Madras, Chennai.MHRD institution, India
Thesis topic: Spectral tailoring through concatenated all-fiber interferometers for communication and sensing applications.
Specialization: Fiber Optics
Anna University, Chennai, India 2008 - 2010
Field of study: Laser and Electro Optical Engineering
Degree: Master of Technology
Thesis topic: Synthesis and Optical Characterization of Au-Ag Nano-particles for
Optical Limiting Application
Specialization: Laser, Optics and Photonics
Certificate of merit: Japanese language course - Basic level
Bharathiar University, Coimbatore, India 2004 - 2006
Field of study: Physics
Degree: Master of Science
Specialization : Electronics
Calicut University, Calicut, India 2001 - 2004
Field of study: Physics
Degree: Bachelor of Science
Specialization : Electronics
Certificate of merit: National graduate physics examination 2004 - BSc level
Skills
❖ Design of an optical heterodyne interferometers system in free space for vibrational measurement.
❖ Design of optical interferometers system in free space and using fiber directional coupler and design of fiber optic sensors for various physical parameters.
❖ Z-Scan experimental technique for nonlinear optical characteristic study and Fabrication of microstructured /tapered fiber using Flame brush torch method.
❖ Solid cell assisted photo-acoustic spectroscopy using nanosecond pulsed laser.
❖ The synthesis of nanoparticles through chemical reduction method
❖ Sample pellet preparation using hydraulic press method for terahertz pump-probe time-domain spectroscopy
❖ A Michelson interferometer based digital holography for image reconstruction.
❖ Terahertz generation, detection, Imaging using femtosecond pulsed laser/ IMPATT 110 GHz source
❖ Mat lab code for dimensional and two dimensional Fast Fourier Transform.
❖ The software Expertise in MATLAB, Microsoft Excel, Word, PowerPoint, Origin, LabVIEW, Beginner in software such as Optiwave, Zemax-Opticstudio, , COMSOL.
❖ Hand on experience in different optical components includes
1. He- Ne Laser at 632 nm for digital holography
2. Diode Laser Multimode - Temperature controller mount type- Thorlabs
3. Diode-pumped Nd-YAG CW Laser and SHG for 532 nm/Coherent Genesis SLM
4. Diode Laser single-mode – Pigtail type – Thorlabs
5. CCD camera (400 nm - 600 nm)-(780x1024) Thorlabs
6. Optical Spectrum Analyzer (600 nm 1600nm)-Yokohama Ltd
7. Light Runner kit –Fiberoptics
8. All Fiber directional couplers based deviceFusion splicing Machine
9. Thorlabs - TXP Polarimeter o Ne-THis Terahertz Camera
10. 0.110 THz IMPAAT diode
11. Polarized beam splitters (400 nm - 600 nm)
12. Chameleon femtosecond Tunable laser, ~ 650 nm to 1300 nm, Pulse width 140 fs, the repetition rate of 80 MHz.
13. UV-VIS-NIR absorbance spectrophotometer,
14. Spectrometers (400nm -700nm ) – Avantes, Thorlabs, Ocean Optics
15. White light source- halogen lamp (400nm -700nm ) \
16. Polytech-Scanning Vibrometer (PSV-500)
17. PDV-100 Portable Digital Vibrometer
18. Newport, Universal Motion controller ESP 300 for the scanning mirror
19. Acousto-Optic Modulators
20. iSPA-SF2 Frequency Synthesizer & RF Driver
Professional interests
Teaching - Undergraduate, Graduate, Postgraduate level
Optical Metrology-Interferometry based phase measurements
Biophotonics
Nanophotonics
Acousto-optic modulator based fiber laser
Micro Mach-Zehnder interferometer based fiber laser
Fiber Interferometers for communication
Fiber optic sensors for various physical parameters
Fiber Micro wire-based devices for photonics application
Evanescent field sensors.
Nanoparticles for Optical limiting/ switching application.
CV
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