Gayathri Bharathan, Optics and Photonics Centre, IIT Delhi

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This semester

OPP7010
Photonics Laboratory - 1running now
3 (0-0-6) credits · Slot P
unrated

Earlier

OPL7711
Laser Science and Technologyrunning now
3 (3-0-0) credits · Sem 2, 2025-26
unrated

Each course has its own page and discussion.

Doing a BTP, MTP, PhD, internship or RA position under Bharathan, scored on five separate axes.

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Mentorship5

1 · left yourself to itclosely guided · 10

Availability5

1 · weeks to get a replyresponds same day · 10

Freedom5

1 · told exactly what to dopicked my own direction · 10

Workload5

1 · lightpunishing · 10

Credit5

1 · contribution went unacknowledgedscrupulously fair on authorship · 10

These are deliberately not all “high is good”. Someone who wants heavy guidance and someone who wants total autonomy are looking for opposite ends of the Freedom axis. Answer honestly about what it was like; readers will judge fit.

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Areas listed by the department

Near and mid-infrared fibre lasersUltrafast lasersFemtosecond laser micro-machining

Publications, via OpenAlex

8h-index

300Citations

36Works

8i10

Topic clusters

Photonic Crystal and Fiber OpticsLaser Material Processing TechniquesAdvanced Fiber Laser TechnologiesAdvanced Fiber Optic SensorsSolid State Laser Technologies

Most recent

Reconfigurable modulation depth in multimode-interference saturable absorbers for 2 µ m fiber lasers · Journal of Optics, 2026
Femtosecond laser written high-index contrast low-loss mid-IR waveguides in Suprasil 3001 · 2025
Chalcogenide-Glass Waveguide Arrays for Mid-Infrared Mode-Locked Fiber Lasers · Journal of Lightwave Technology, 2025 · 2 citations
GLS Waveguide Array: A Novel Saturable Absorber for Mid-Infrared Mode-Locked Fiber Lasers · 2025
Physical mechanisms of femtosecond laser induced refractive index change in direct-written mid-infrared fiber Bragg gratings · APL Photonics, 2024 · 8 citations

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