Objective
Comprehensive studies of resonant interaction of laser radiation with sub-millimetre and sub-micron- thin atomic vapour layers are planned. Under these experimental conditions, all the known resonant optical processes exhibit new and attractive peculiarities and features caused by boundary-conditioned atomic velocity and interaction time anisotropy, dimensional effects arising when the cell thickness L is comparable with the radiation wavelength lambda, enhanced contribution of atom-dielectric surface interaction, etc.
More specifically, the following applied, experimental and theoretical work will be done.
- Development and fabrication of unique optical nano-cells containing alkali metal vapours with smoothly variable thickness in 30-2000nm range and sub-millimetre thin cells, filled with alkali metal, with or without buffer gas, as well as fabrication of special cells with CaF2 (BaF2) windows. These cells and their accessories will be used in all experimental studies throughout the project.
- Development and use in the following studies of a new atomic frequency reference technique based on alkali metal vapour nano-cell. This single-beam method, which fully exploits the sharp sub-Doppler nature of the atomic spectra at L = lambda/2 and the narrow pumping features at L = lambda, will be free of the drawbacks of the conventional saturated absorption technique.
- Development of a new, high spectral resolution "L= lambda Zeeman technique" based on nano-cell, and usage of this method for studies of Zeeman effect for hyperfine levels of alkali atoms, including transition from linear to non-linear regime in an external magnetic field (0.1 - 200 Gs).
- Study of coherent population trapping (CPT) phenomenon in nano- and micro- cells, prepared by monochromatic and frequency modulated (in kHz and GHz regions) laser radiations. These studies will be aimed to revealing and understanding the optimum experimental parameters in order to achieve a minimum FWHM and a maximum contrast of the CPT profile.
- Experimental and theoretical study of the electromagnetically induced transparency (EIT) and velocity-selective optical pumping (VSOP) in alkali metal nano- and micro- cells and comparison with the corresponding processes in the conventional cells of centimetre-range thickness.
- Study of the atom-surface interaction in a selective reflection experiment, depending on the material of the dielectric window. In particular, the expected turning universal van der Waals interaction from attraction to repulsion by temperature control will be investigated for the case of high-lying excited Cs(8P) atom and CaF2 or BaF2 window.
Besides the fundamental interest, the expected results of the project will be useful for a number of scientific and technological applications, among which are: development of a new atomic frequency reference, development of compact optical magnetometer schemes with a sub-micrometer spatial resolution, development of new atomic clocks, etc.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
This project has not yet been classified with EuroSciVoc.
Be the first one to suggest relevant scientific fields and help us improve our classification service
You need to log in or register to use this function
Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Data not available
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Data not available
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Data not available
Coordinator
SOFIA
Bulgaria
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.