If you're interested in photonics you're in the right place. 

Glimpses of Research Works in the Last Five Years

• "The World's First GeSn Optical Waveguide-based Sensor Platform for Trace/Atmospheric Gas Detection" has been accepted in the Journal of the Optical Society of America B (JOSA B) [DOI: 10.1364/JOSAB.484610], Date of Posting on JOSA B: 18th April 2023 

• The world’s first GeSn-based heterojunction phototransistors (HPTs) and its noise equivalent circuit modeling with the highest signal-to-noise ratio (SNR) operating at shortwave infrared (SWIR) region [IEEE Transactions on Electron Devices, vol. 66, no. 4, pp. 1797-1803, 2019].  

• The world’s first GeSn-based p-n-p HPTs with the best spectral responsivity for midinfrared (MIR) applications [IEEE Transactions on Electron Devices, vol. 66, no. 9, pp. 3867-3873, 2019].  

• Effects of GeSn/Ge hetero-interface defect on the performance of HPTs [IEEE Sensors Journal, vol. 21, no. 5, pp. 5975-5982, 2020].  

• Si-based GeSn multiple-quantum-well (MQW) HPTs for SWIR applications [Semiconductor Science and Technology, vol. 36, no. 6, 2021].  

• Si/SiO2 Distributed-Bragg-reflector (DBR) resonant cavity enhanced (RCE) GeSn-based p-i-n photodetectors [IEEE Sensors Journal, vol. 21, no. 8, pp. 9900-9908, 2021]  

• The world’s first GeSn MQW p-i-n photodetectors with cut-off wavelength up to 3.5 µm for MIR bio-sensing applications [accepted on IEEE Transactions on NanoBiosciences, 2021, in press]  

• The world’s first noise equivalent circuit modeling of Si/SiO2 DBR-based lateral rib waveguide Ge p-i-n photodetector for sensing in SWIR regime [Submitted on Scientific Reports (Nature), 2021, Under Review]. 

We are one of the leading groups in the field of group-IV semiconductor alloys technologies in the world and INDIA that can demonstrate SiGeSn-based passive and active devices. 

Current Research Work

• Studies of physical processes in novel group-IV alloys

• Design and analysis of the various type of photonic sensors using novel group-IV alloys for short-wave infrared (SWIR) and mid-infrared (MIR) applications

• Light emitters and resonators using group-IV alloys.

• Design and analysis of Group-IV alloy-based Electro-absorption Modulator (EAM) for MIR applications. 

Lead:

• Dr. Harshvardhan Kumar, Assistant Professor and Head of Group, ECE

Group Members: 

Sub-Group Light Emitters and Detectors (SGLED):

1. Yash Bijawat, Final Yr. B.Tech, ECE

2. Sonali Rana, M.Tech Scholar

3. Piyush, 3rd Yr, B.Tech, ECE

Sub-Group Materials and Photonic Sensors (SGMPS):

4. Neha Soni, 4th Yr, B.Tech-M.tech Integrated, ECE

5. Som Mudgil, Final Yr, B.Tech, ECE

6. Urvi Taiwari, 3rd Yr, B.Tech, ECE

Sub-Group Avalanche Detectors (SGAD):

7. Jyoti Tater, Final Yr, B.Tech, ECE

8. Shubh Jaiswal, Final Yr, B.Tech, ECE

Alumni

• Apoorv Sharma (B.Tech, 4th Yr, LNMIIT Jaipur), LUSIP 2022 and BTP Work, Research area: Photonic Sensors and Detectors [Status: Completed]

• Anushpamathi Sundararajan (UG, External Candidate, VIT Chennai), Summer Research Intern under LUSIP Program (May 18th~July 17th, 2021), ECE, LNMIIT, Jaipur [Status: Completed].

• Tanisha Bohra (M.Sc. 2nd Yr, JNVU, Jodhpur), Research area: Photonic Sensors [Status: Completed]

• Nischay Thapar (B.Tech, 4th Yr, LNMIIT Jaipur), Research area: Photonic Devices [Status: Completed]

• Jagrati Yadav (M.Sc Tech, 2nd Yr, NIT Waranagal), LUSIP 2024, Research area: Photonic Sensors [Status: Completed]

• Surajit Maity (B.Tech, 4th Yr, University of Calcutta), LUSIP 2024, Research area: LED [Status: Completed]

• Divyam Khetan (B.Tech, 3rd Yr, LNMIIT Jaipur), LUSIP 2023,  Research area: Detectors [Status: Completed]

• Pearl Agarwal (B.Tech, 4th Yr, LNMIIT Jaipur), LUSIP 2024, Research area: LED [Status: Completed]

• Achyarul Mabruri, Nationality: Indonesian (B.Tech, 4th Yr, DTU), LUSIP 2024, Research area: Materials [Status: Completed]