Overview of Achievements
since the Start of the Project until 31 March 2007
- Updated survey produced on gaseous environment led to focusing the research
on alkali atoms and diatomic molecules at conditions sustainable for process-control
of the open surface of semiconductors at end-user.
- Theory and experiments on dimers NaRb, NaCs, RbCs, KRb, KCs, PbO, PbF2
performed under single laser dc and pulsed excitation proved proper electric
field sensitivity, spectral range and time dependent response.
- Cs vapour at room temperatures is selected as a tracer gas. Two-step diode
laser and/or dye laser excitation of Cs atoms provided optical response at
suitable electric field range, including field induced orientation of atoms.
- Advanced diode laser blocks providing frequency and amplitude stability
were designed and manufactured (by BSI, in cooperation with RD ALFA) and applied
for efficient two-step excitation of tracer gas.
- Electrodes with strip and pin detectors topology and laboratory testing
device were produced, optical illu-mination and detection channels designed and
constructed; high contrast electric field optical images obtained.
- The industry targeted tracer gas camera is produced and CCD camera based
detection channel is organized.
- The technologically feasible prototype electric field imaging device
was manufactured and tested.
- Convolution algorithms were optimized, software developed and tested for
creating 2D plots of digitized electric field optical image accounting for field
gradient, time evolution and allowing detecting pads’ contact faults.
- Extra funding and job places are created at LU and end-users (BSI, RD Alfa)
as a result of project activities.
