Optics Intern at Space Application Centre(SAC) ISRO (2026-04 – Present)
Dual-Band Infrared Imaging System Design for Satellite-Based Earth Observation
- Designed a dual-band infrared imaging system for satellite-based remote sensing operating in MWIR and LWIR bands (3–11 µm) for high-resolution Earth observation applications.
- Developed an F/2 optical system for a satellite platform at 500 km orbit altitude, optimized to achieve 5 m spatial resolution using a detector with 640 × 512 resolution and 15µm pixel pitch.
- Integrated a Ritchey–Chrétien (RC) telescope with a 3-lens collimation system using one ZnSe and two Ge lenses for broadband infrared collection and collimation.
- Implemented a beam splitter-based dual-channel architecture separating incoming radiation into MWIR (reflected path) and LWIR (transmitted path) channels for simultaneous dual-band imaging.
- Designed and validated imaging performance for ICDA detector integration, incorporating a Germanium filter and a 10.06 mm diameter cold stop for spectral filtering and stray-light suppression. Performed MTF analysis and optical tolerancing studies to ensure robust dual-band imaging performance under manufacturing and alignment variations.
- Software: ZEMAX
Project Intern at IIT Hyderabad (2025-05 – 2025-07)
Development of Reflective MPLC Architectures for Universal Mode Conversion and High-Dimensional Spatial Mode De-Multiplexing
- Implemented the Wavefront Matching algorithm to optimize phase masks for MPLC design.
- Developed a 3-mask universal mode converter to transform arbitrary input spatial modes into desired target modes.
- Designed and optimized a 7-phase-mask Hermite-Gaussian mode Sorter operating at 1550 nm for efficient sorting of 16 superposed spatial modes.
- Implemented beam propagation modeling using Fourier optics and Fresnel propagation for phase mask optimization and performance enhancement of the MPLC system.
- Achieved 99% diagonal crosstalk performance with intermodal leakage reduced to the order of 10, Optimized system parameters including mask spacing, pixel pitch, incident angle, and propagation distance to improve fidelity and minimize propagation losses.
- Software: Python
