Dr. Nitu Borgohain

Assistant Professor

ACADEMIC QUALIFICATION: M.Sc. (IIT-ISM, Dhanbad-2012), Ph.D. (BIT, Mesra-2019)

SPECIALIZATION: Nonlinear & Quantum Optics, Nano- and Bio-photonics, Condensed Matter Physics, Astronomy and Astrophysics, Astronomical Instrumentations

RESEARCH BACKGROUND:

 Nonlinear optical pulse and beam propagation in quantum well nanostructures
 Design, optimization and applications of Photonic Crystal Fibers
 Synthesis and investigation of structural and optical properties of rare earth activated phosphors
 Design and development of indigenous Optical and Radio-Telescopes
 Supercapacitors for large capacity energy storage

EXPERIENCES: Teaching experiences = 7+ Years (B.E., M.Sc. and Integrated M.Sc. Physics)

Research Experiences = 7+ Years (10+ Publications in peer-reviewed journal)

Administration = Joint Director, IQAC, USTM (2018-20),

Convener, Innovation  and Incubation Hub, CIIE, USTM (2021-)

PhD Supervision: 2 (Ongoing) = Ms. Monika Kalita (2021A) and Ms. Amina Khatun (2021B)

M.Sc. Project Supervision: 6 (2021), 6 (2020), 16 (2019), 9 (2018).

B.Sc. Project Supervision: 2(2020)

PUBLICATIONS:

• Nitu Borgohain, and S. Konar, “Broadband mid-infrared supercontinuum generation in three-level multiple quantum wells using short optical pulses”, Optics and Laser Technology, 120, 105684 (2019). SCI Indexed, Impact Factor=3.867.
• Nitu Borgohain and S. Konar, “Supercontinuum generation in quantum wells facilitated by electromagnetically induced transparency”, Journal of Modern Optics, 64, 462-470, (2017), SCI Indexed, Impact Factor=1.464.
• Nitu Borgohain, Milivoj Belić and S. Konar, “Infrared supercontinuum generation in multiple quantum well nanostructures”, IOP Journal of Optics, 18, 115001, (2016), SCI Indexed, Impact Factor=2.516.
• Nitu Borgohain and S. Konar, “The effects of control field detuning on the modulation instability in a three-level quantum well system”, Journal of Applied Physics, 119, 213103, (2016), SCI Indexed, Impact Factor=2.546.
• Nitu Borgohain, Mohit Sharma and S. Konar, “Broadband supercontinuum generation in photonic crystal fibers using cosh-Gaussian pulses at 835 nm wavelength”, Optik, 127, 1630, (2016), SCI Indexed, Impact Factor=2.443.
• Nitu Borgohain, Milivoj Belić and S. Konar, “Giant parabolic nonlinearities at infrared in Ʌ-type three level multiple quantum wells”, Annals of Physics, 361, 107, (2015), SCI Indexed, Impact Factor=2.730.
• Nitu Borgohain and S. Konar, “Self-phase modulation dominated supercontinuum generation employing cosh-Gaussian pulses in photonic crystal fibers”, Journal of Nanophotonics, 9, 093098, (2015), SCI Indexed, Impact Factor=1.494.
• P. Pal, P. Kr. Baitha, N. Borgohain and J. Manam, “Enhanced photoluminescence emission from XSO₄:Eu²⁺(X=Mg, Sr) microphosphors”, Indian Journal of Physics, 88, 243, (2014), SCI Indexed, Impact Factor=1.947.
• Sharma, N. Borgohain and S. Konar, ”Supercontinuum generation in photonic crystal fibers possesing high birefringence and large optical nonlinearity”, Physics Express, 4, 26, (2014).
• Sharma, N. Borgohain and S. Konar, ”Index guiding photonic crystal fibers with large birefringence and walk-off”, IEEE Journal of Lightwave Technology, 30, 3339, (2013), SCI Indexed, Impact Factor=4.142.

BOOK CHAPTERS AND CONFERENCE PROCEEDINGS:

• Manisha Sharma, Lipika Saha, Tapas Sen, Masuma Jannat, Nitu Borgohain, “Slow optical soliton in a three-level multiple quantum well under electromagnetically induced transparency”, Springer Proceedings of Physics, CAMNP, Vol. 271, Ch. 23 (2021), ISBN: 978-981-16-7690-1.
• Darshana Bora, Plabita Chetia, Jyotshna Das, Nitu Borgohain, “Investigation of modulation instability in a multiple quantum well nanostructure under EIT window”, Springer Proceedings of Physics, CAMNP, Vol. 271, Ch. 38 (2021), ISBN: 978-981-16-7690-1.
• Monika Kalita, Rimlee Saikia, Mohit Sharma, Nitu Borgohain, “Efficient supercontinuum generation in lead silicate pcf employing tan-hyperbolic Gaussian pulses”, Springer Proceedings of Physics, CAMNP, Vol. 271, Ch. 48 (2021), ISBN: 978-981-16-7690-1.
• Nitu Borgohain, Dipankar Sarmah, Harshajit Kalita, and Abdulla Al Amin, ”Giant Kerr nonlinearity and slow light via EIT in three-level semiconductor quantum well nanostructures”, Advances in Science and Technology, -II, pp-55-60, (2020) (ISBN-13:978-93-90491-11-7).
• Borgohain, S. D. Sangma, O. Borang, S. R. Sangma, “Enhanced Kerr nonlinearity via EIT in a three-level semiconductor quantum well nanostructure”, Applied Science Innovations Pvt. Ltd., India, Page. 355, (2019), (ISBN: 978-81-939516-0-6).
• K. Bora, I. F. Ali, R. Kalita, R. G. Chetry, Anup K. Bordoloi, N. Borgohain, “Monitoring & measurement of road traffic noise level in Guwahati and its nearby area”, UGC sponsored national seminar, Dhing College, Nagaon, Assam, (2017), (ISBN: 978-81-202-8809 ).
• Rajnandan Lahkar, Jyotishmita Borah, Abhijit Shyam, Nitu Borgohain, “Enhanced Kerr Non-linearity in Semiconductor Quantum Wells”, National Conference on Emerging Trends in Physics-2021, Tezpur University.
• Yingam Kena, Nur Alom, Jakgam Jakgam K Marak, Nitu Borgohain, “Kerr nonlinearity induced self-phase modulation in a three-level semiconductor quantum well system”, NCRAST-2020, at ASTU.
• Rafiqul Hassan*, Minakshi Deka, Nileema Akhtar, Nitu Borgohain, “Generation and propagation of soliton in a three-level quantum well system under electromagnetically induced transparency window”, NCRAST-2020, at ASTU.
• Nitu Borgohain, Sajia Yeasmin, Sabanam Talukdar, “Slow light in four-level quantum well nanostructure under electromagnetically induced transparency windows”, Indian Science Congress-2020, Bangalore.
• Borgohain, ”Suppression of modulation instability by control field in a three-level quantum well nanostructure”, Optical Society of India-International Symposium on Optics- 2018, IIT Kanpur.
• Sajia Yeasmin, Sabnam Talukdar and Nitu Borgohain, “Large Kerr nonlinearity in a four-level quantum well under the regime of electromagnetically induced transparency”, Optical Society of India-International Symposium on Optics- 2018, IIT Kanpur.
• Rimlee Saikia, Aditya Baishya, Utpal Talukdar and Nitu Borgohain, “Investigation of spectral broadening induced by self phase modulation of tanh Gaussian pulse in nonlinear medium”, Optical Society of India-International Symposium on Optics- 2018, IIT Kanpur.
• Borgohain, “Suppression of modulation instability by control field in a three-level quantum well nanostructure”, Optical Society of India-International Symposium on Optics -2018, IIT, Kanpur.
• Borgohain and S. Konar, “Giant quintic nonlinearities at slow light level in semiconductor quantum wells”, Proc. of SPIE, Vol-9654, Page-1D1-5, International conference on Optics and Photonics (ICOP-2015), University of Culcutta, Kolkata.
• Borgohain and S. Konar, “Investigation of electromagnetically induced transparency and group velocity in a Ʌ-type three level semiconductor quantum wells”, Conference on nonlinear systems and dynamics (CNSD-2013), Indian Institute of Technology (IIT)- Indore.
• Borgohain and P. K. Baitha, “Synthesis and Investigation of Structural and Optical properties of Eu²⁺doped MgSO₄ phosphor”, National conference on luminescene and its application (NCLA-2013), PES Institute of Technology, Bengaluru, India.

NOTEWORTHY HIGHLIGHTS:

Invited Lectures:

1. Invited Lecture on “Control field Rabi frequency managed broadband supercontinuum generation in a semiconductor quantum well nanostructure” at “International Scientific Conference on Lasers, Optics, Photonics and Sensors” June 12-14, 2021, USA.
2. Popular Talk on “Unlocking the mysteries of the sky with Astronomy and Astrophysics”, delivered at Amity University on 27/07/2020.
3. Popular Talk on “Exploration of the Universe through Astronomy and Astrophysics”, delivered at Bimala Prasad Chaliha College, Kamrup on 8/9/2020.
4. Popular Talk on “Astronomy and Astrophysics: Sky is NOT the limit”, delivered at Govt. Polytechnic, Lakhisarai, Bihar on 04/07/2020.

Reviewer of Journals:

1. Journal of Optics (IOP)
2. Physica Scripta (IOP)
3. Current Nanoscience (Bentham Science)
4. International Journal of Magnetics and Electromagnetism (Vibgyor Publishers)

Member of Societies:

1. Life Member of Indian Science Congress Association
2. Member, Optical Society of India
3. Pragjyotish Amateur Astronomers’ Association

Major Involvements:

1. Established the Astro-Science Centre & Observatory (ASCO), at University of Science & Technology, Meghalaya.
2. Developed indigenous Optical and Radio Telescopes for ASCO, at USTM.
3. Convener of “International Day of Light-2018”, in association with Optical Society of India and UNESCO.
4. Convener of Pre-Solar Eclipse Workshop for safe viewing of Solar Eclipse of 2020 in collaboration with Tezpur University Observatory, PRAG Astro Association, and SWAN.
5. Resource Person in “3-days State Level Master Resource Person Workshop- cum –Training Programme on Basic Observational Astronomy”, organized by Guwahati Planetarium on 12th to 14th of February, 2021.
6. Convener of Webinar on “Teachers’ Role in NEP implematation-2020” at USTM in collaboration with Bharatiya Shikshan Mandal and Niti Aayog, Govt. of India.

Google Scholar Link: https://scholar.google.co.in/citations?user=kNhBTmsAAAAJ&hl=en