Optoelectronics and Nanofabrication Laboratory

Faculty:


PhD Students:
  • Tathagata Bhowmick
  • Viswas Nair
  • Sona Das

MTech Students:
  • Chatti Rama Sandeep
  • Raghunandan Rao

Facilities:
  • Facilities for Optoelectronics Laboratory:
    • Optical Bench and Optical waveguiding setup
    • Ps-pulsed laser source at 980nm, 1550nm, and 400nm
    • Sorption pump
    • CO2 laser (10W)
    • Laser Scanner (1kHz)
    • MCT detectors (4kHz, 4kV/W)
    • Motorized positioners(0.1micron)for optical waveguide measurements
    • Data acquizition cards and systems (GHz)
    • Tunable laser (1270-1650nm)
    • Lock-in Amplifiers
      Oscilloscopes (60MHz)
    • Signal Generators
    • Power Supplies
    • Blue DPSS laser
    • White light source
  • Facilities for Nanotechnology Laboratory:
    • MJB3 Mask Aligner (i-line, 3inch substrates)
    • Baking Oven
    • Ziess Microscope (50X obj)
    • Photoresist Spinner (4800rpm)
    • Optical surface profiler (vertical 0.01nm, Horizontal 2.5micron)
    • Millipore Ultrapure water system
    • Reactive Ion Etch System (Methane Chenistry)
    • E-Beam evaporator (turbopump driven, 6kW, 4pocket, 6cc)
    • Class 100 Developing Station, Acid station, and Solvent ststion
    • Ultrasonic cleaner
  • Rapid thermal anneal (RTA) system

Research:
  • Multiquantum Well Intermixed Waveguide Grating Assisted Couplers
  • High Speed Waveguide Photodiodes
  • Photodiode Arrays
  • SiGeC/SiC Quantum Dash LEDs on silicon by spin-on technique
  • Laser assisted vision through Fog

Publications:
  • "Design of a Grating-Assisted Lateral Directional Coupler by Impurity-Induced Quantum Well Intermixing of InGaAs/GaAs", A. V. Barve and U. Das, Special Issue, joint publication of IEEE J. Lightwave Technol., 25, 2448(2007) and Optical Society of America.
  • "Optical Quality SiC nano-structures by Spin-On Technique and Anneal on Si", A Mondal and U Das, J. Phys. D: Appl. Phys. 42, 234002-234006 (2009).
  • "Quantum well intermixed waveguide grating", R. Sonkar and U. Das, Optical and Quantum Electronics, 42, No.9-10, pp.631-643(Sept. 2011)
  • "Experimental Study of the Effects of Environmental and Fog Condensation Nuclei Parameters on the Rate of Fog Formation and Dissipation Using a New Laboratory Scale Fog Generation Facility", V. P. Singh, T. Gupta, S. N. Tripathi, C. Jariwala, and U. Das, Aerosol and Air Quality Res., 11, 140-154 (2011)
  • "40GHz Integrated MQW Intermixed Waveguide Photodiodes", T. Bhowmick and U. Das, Poster No. OP-P.25, IWPSD 2011, Dec. 19-22, 2011, IIT Kanpur, Kanpur, UP, India. [Best Poster Award]
  • "Growth of SiC Nano-Crystals on H-Terminated Si(100)3o Substrate Surface Steps", D. Jain, C. Sandeep, and U. Das, Poster No. OP-P.27, IWPSD 2011, Dec. 19-22, 2011, IIT Kanpur, Kanpur, UP, India
  • "Fabrication of Waveguide Grating", S. Sonkar and U. Das, Presentation No. OP-O.04, IWPSD 2011, Dec. 19-22, 2011, IIT Kanpur, Kanpur, UP, India

Projects:
  • Nano-sized SiC based quantum structures on Si by spin-on techniques
  • Intelligent Sensors Lab: Photodiode array is to be developed for visual sensing

Contact Person:
Utpal Das
Email: utpal@iitk.ac.in
Phone: 91(512)259-7360
Location:
  • ACES 122/123 (Nano Fabrication Laboratory)
  • ACES 129 (Optoelectronics Laboratory)

Photos: