Home • People • Yannick Alan De Icaza Astiz
Yannick at the city of arts and sciences of Valencia
Academic profile
Yannick got his Master degree from Universitat Politècnica de Catalunya in the program Master in photonics. Before he got his Bachelor degree from Universidad Nacional Autónoma de México, winning the Gabino Barreda's medal for the best student of generation.
Yannick in Monte Alban, México
Current Work
Thesis proposal.
Abstract
Atomic magnetometers have become the most sensitive tools of measuring magnetic fields. New developments in this vibrant area of knowledge can lead to new technologies in the study of fast and small magnetic fields, such as the ones produced by the human brain. However, limitations of an atomic magnetometer that is probed using light are: atomic projection noise of the atoms and shot noise of the probing light. I propose to make, detect, characterize and apply a “fast-measuring” source to interact with Rubidium atoms: Rubidium-resonant pulsed polarization squeezed light. We prove in this work that it is theoretically possible to produce pulsed polarization squeezing using an optical parametric oscillator resonant to Rubidium and an acousto-optic modulator. From this calculation we conclude that one could have a repetition rate as high as 3 MHz of the pulses, still preserving a good degree of squeezing. In this way, we could improve the detection of fast and small magnetic fields, and measure them in an atomic magnetometer using the Faraday effect. This proposal is divided as follows: context, objectives, and work plan and calendar.
PPSqueezing_resubmitted.pdf Pulsed Polarization Squeezing
Past Work
Master Thesis
Abstract
We present a coherent-beam-combining (CBC) experiment using a 795nm diode laser as a technique to achieve more power by combining two beams. Two Gaussian beams are made to interfere while controlling polarization, amplitude and their relative phase, in a modified Mach-Zehnder interferometer coupled with a polarization interferometer. The output power is locked using a split detector, thus stabilizing its performance and the final output. Next, we explore the polarization-beam-combining (PBC) in this new setup, yielding an efficiency of 80.9% for CBC – polarized light– and 91.7% for PBC – non-polarized light–. We ran a tapered amplifier (TA), controlling its current, temperature and heat dissipation, whose mechanical housing is currently in the optimization phase. In the sequel we shall be installing a TA on each arm of the Mach-Zehnder interferometer to obtain a brighter source. One interesting application of this work is its use in atomic-physics experiments (using rubidium) and second order interactions in crystals.
Master_project_Yannick_CBC.pdf Master thesis