
ULTRAFAST PHOTONICS LABORATORY
Dept. of Applied Physics, DIAT, Pune

Ultrafast Photonics Laboratory (UPL) primarily works in two domain : Building of ultrafast fiber and solid state lasers and THz Spectroscopy and Imaging. The laboratory hosts state-of-the-art equipment in realizing these while offering M. Tech. and Ph. D. programs as per DIAT Pune's criteria. UPL is committed to work with the vision and mission of DRDO, with nation first policy.





Dr. Shyamal Mondal
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Assistant Professor,
Dept. of Applied Physics,
Defence Institute of Advanced Technology, Pune, 411025, India
e-mail: shyamal_mondal@diat.ac.in, shyamal.kgec@gmail.com
Phone No: +91-20-2430 4500
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On-going Projects:
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1. Design and Development of Ultrafast fiber laser for Broadband Terahertz Generation and Detection, CARS (2024-Pre)
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Completed Projects:
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1. Realization of non-SESAM based modelocking of Ultrafast fiber lasers and its Amplifiers, DIAT Grant-in-Aid (2022-24)
Recent Publications
2025
1. Linsie, A. Alice, Shyamal Mondal, and Shanthi Prince. "Highly Birefringent Terahertz PCF Using Epsilon-Near-Zero (ENZ) Material for Polarization Maintaining Applications." In 2025 10th International Conference on Signal Processing and Communication (ICSC), pp. 110-113. IEEE, 2025.
2. Rashi Mahendra Patil, Akshay Raj R, Shyamal Mondal, Tejashree Bhave, Appala Venkata Ramana Murthy, An analytical disquisition on the nonlinear optical responses of carbon quantum dots engineered by diverse synthesis methodologies, Nano Trends, Volume 9, 2025, 100081, ISSN 2666-9781, https://doi.org/10.1016/j.nwnano.2025.100081.
3. Mondal, Shyamal, Kashyap Jampani, Akshay Raj R, Dibakar Roy Chowdhury, and Abhijit Sethi. "Implementing W-Net deep learning for terahertz image enhancement and segmentation." Engineering Research Express 7, no. 1 (2025): 015246.
2024
4. B. Das, M. S. Ansari and S. Mondal, "Indigenously Designed and Development of Actively Q-Switched Nanosecond Nd:YAG Laser," 2024 IEEE Pune Section International Conference (PuneCon), Pune, India, 2024, pp. 1-6, doi: 10.1109/PuneCon63413.2024.10895724.
5. Raj R, Akshay, Satish, Munukutla Sri Sai, and Shyamal Mondal. "Dual-Stage Amplification of All PM Yb-Doped Ultrafast Fiber Laser Modelocked by SESAM." In 2024 IEEE Pune Section International Conference (PuneCon), pp. 1-4. IEEE, 2024.
6. Akkanaboina, Mangababu, Nityananda Acharyya, Shreeya Rane, Gopal Kulkarni, Shyamal Mondal, Saloni Sharma, Shubhda Srivastava, Bipin Kumar Gupta, and Dibakar Roy Chowdhury. "Temperature-Dependent Broadband Terahertz Behavior of Metal-Free Multiwalled Carbon Nanotubes." ACS Applied Optical Materials 2, no. 12 (2024): 2519-2527.
7. Linsie, A. Alice, Shyamal Mondal, and Shanthi Prince. "Highly birefringent hexagonal porous core photonic crystal fiber for polarization maintaining integrated THz-photonics applications." Optical and Quantum Electronics 56, no. 10 (2024): 1672.
8. Krishna, RN Vamsi, Shyamal Mondal, S. Brahadeeswaran, and Anil K. Chaudhary. "Study of temperature-dependent optical properties of L-Arginine Phosphate-monohydrate (LAP) for efficient THz generation." In Frontiers in Optics, pp. JD4A-52. Optica Publishing Group, 2024.
9. Rathinasamy, Vaisshale, Rama Rao Thipparaju, E. Nisha Flora Boby, and Shyamal Mondal. "Numerical investigation and circuit analysis of interdigitated photoconductive antenna for terahertz applications." Optical and Quantum Electronics 54, no. 4 (2022): 239.
10. Boby, E. Nisha Flora, Sachin Kumar, Aditya Nath Bhatt, and Shyamal Mondal. "Investigation of Bow-Tie Photoconductive Antennas for Terahertz Imaging Applications." In International Conference on Computing, Control and Industrial Engineering, pp. 441-448. Singapore: Springer Nature Singapore, 2024.
11. Raj R, Akshay, Saikat Saha, and Shyamal Mondal. "Advancements in the Use of Artificial Saturable Absorbers for Modelocking of 2 µm Ultrafast Fiber Lasers." Annalen der Physik 536, no. 8 (2024): 2300458.
12. Mahankali, Pallavi, Shyamal Mondal, Rama Rao Thipparaju, and Susila Mohandoss. "Graphene based waveguide fed hybrid plasmonic terahertz patch antenna." Frequenz 78, no. 1-2 (2024): 71-78.
Ph. D. Students

Abhijit Sethi
Ph. D. Student
Research Area: Broadband THz sources for spectroscopy and imaging

M Sri Sai Satish
Ph. D. Student
Research Area: Engineered Optical fibers, Fiber sensors, Nonlinaer Optics

Akshay Raj R
Ph. D. Student
Research Area: Modelocked fiber lasers and amplifiers, Nonlinear Optics

R N Vamsi Krishna
Ph. D. Student
Research Area: THz Time Resolved Spectroscopy and THz Camera
Masters' Students

Masood A. Kadiri
M. Sc. (Tech.) Student

Snehashish Biswas
M. Tech. Student

Kunj Vachhani
M. Sc. (Tech.) Student

Khushboo Bishnoi
M. Sc. (Tech.) Student

Prateek Singh
M. Sc. Student
Project Personnel

Anuja Patel
JRF
Research Area: Photonics and Quantum Optics
Alumni

Gouri Shankar
Senior Optical System Er.,
Paras Defence and Space Technologies, Mumbai

Janfishan T
Senior Optical System Er.,
Paras Defence and Space Technologies, Mumbai

Bhargab Das
TE Connectivity, Bangalore

Kashyap Jampani
Workday Senior Specialist,
Strada Global, Hyderabad
Ph. D. degrees awarded under Dr. Mondal
1. Dr. Nisha Flora Bobby
Title of Thesis: Realization of Photoconductive Antennas for Efficient Terahertz Generation and Detection
2. Dr. Vaisshale. R
Title of Thesis: Numerical Modelling of Photoconductive Antenna for Terahertz Applications
3. Dr. Alice Linsie
Title of Thesis: Design and Analysis of Polarization-Maintaining Terahertz Photonic Crystal Fibers with High Birefringence