Laser engineer by day · Musician & artist by night

PhD student at CeNSE, Indian Institute of Science.

Hello, I am Abhigyan

I’m a Prime Minister’s Research Fellow (PMRF) at CeNSE, IISc, working in high-power fiber lasers and nonlinear optics. My research focuses on tunable laser systems for biomedical imaging and semiconductor metrology. Beyond research, I spend time producing music, sketching, and writing.

Tech

Art

Music

Technologies

Advance high-power fiber laser

Broad  wavelength tunability via Raman fiber architectures.
•Broadband supercontinuum source.
•Nanosecond pulsed and continuous-wave (CW) regimes.
•High optical power with spectral control.
•Engineered for imaging, metrology, and nonlinear optics.
Picture of gain fiber of laser
Visible window (through nonlinear frequency conversion)
Near infrared window (through supercontinuum and Raman fiber laser sources)

Packaged fiber laser module

Photoacoustic imaging

Multi-wavelength photoacoustic excitation for spectroscopic imaging.
Laser integration optimized for efficient acoustic generation.
•Spectral contrast from endogenous and exogenous chromophores in ex-vivo configuration.
•System-level design-source, delivery, and signal acquisition.

Associated publication featured as an Optica Spotlight. Read the full spotlight article here.

Semiconductor metrology

Non-contact temperature measurement.
•Continuous operation from ambient conditions up to 600 °C.
Millisecond-scale acquisition, enabling dynamic thermal tracking.
•Minimal system complexity based on a single, spectrally shaped supercontinuum source.

Advance nonlinear optics

• Frequency conversion using second-order (χ²) nonlinear interactions.
• Implementation with BBO, LBO, and PPLN crystals, selected based on phase-matching and power handling requirements..

Teaching and outreach

Courses

Courses and simulation-based projects offered, integrating theory and numerical simulations.

• Computational photonics.

• Nonlinear optics.

•Differential equations.

•Light and biomolecules

•Biostatistics and data analysis

Creative space

Sketching

Capturing the world through fresh eyes via hyper-realistic sketching.

Music

Music composition and production.

Short excerpts from original compositions.

Blue-rock sample

Blue-rock sample

Blue-rock sample

Does AI own us already?

Here is an idea. Imagine that fate of human race is intricately tied to a vicious cycle. The very basics of us, what makes us human, is lost. The essence of humane nature has given way to the dawn of a new race with concrete hearts. “The AI” has the

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