Scientific activity

interaction between laser and water droplets

interaction between laser and water droplets

interaction between laser and water droplets

cristale pentru optica nelineara

cristale pentru optica nelineara

– probe monocristaline orientate pentru masurarea indicilor de refractie (GdCOB:Lu 13%)
- probe din monocristale de tip GdCOB:Lu si GdCOB:Sc orientate in lungimea axei y, pentru masurarea eficientei de dublaj (SHG) in conditii de accord de faza necritic (NCPM)

cristale laser

cristale laser

–medii active laser: YAG:Er (culoarea rosie) pentru emisie laser la 2,94 μm
-mediu activ laser YAG:Nd (culoarea mov) pentru emisie 1,064 μm, 946 nm 1.3μm
-cristale LiNbO3 (culoarea galbuie) pentru optica nelineara (dublare in frecventa)

Time Domain THz Spectroscopy

Time Domain THz Spectroscopy

-aplicaţii în domeniul medical: diagnosticarea incipienta a cancerului de piele;
-aplicatii în domeniul securităţii (detecţia de la distanta a substanţelor periculoase şi a gazelor letale).

YVO4:Er:Yb

YVO4:Er:Yb

Nanomateriale dopate cu ioni de pamanturi rare: Fosfor cu conversie superioara (YVO4:Er:Yb) pompat in IR (980nm) cu emisie in verde

Cristal Nd:Yb:CLNGG

Cristal Nd:Yb:CLNGG

Cristal tip granat cu structura dezordonata codopat neodymium ytterbium creat pentru cercetari asupra laserilor de mare putere

Oglinzi laser

Oglinzi laser

Oglinzi dielectrice proiectate pentru laserii de putere mare ce opereaza in domeniul de lungimi de unda infrarosu apropiat si vizibil

Carbon nanoparticles synthesized by laser pyrolysis technique

Carbon nanoparticles synthesized  by laser pyrolysis technique

Carbon nanoparticles synthesized by laser pyrolysis technique, forming a homogeneous film onto the water surface through self-assembling phenomenon. The thickness of the film is around 2 µm.

Wavefron shape after reconstruction

Wavefron shape after reconstruction

A self-referencing inteferometric method of wavefront sensing based on lateral shearing interferometry, able to measure the local slope of a wavefront is described.

For this, a deformable mirror is used to manipulate the testing wavefront and a Murty plane-parallel plate interferometer to analyze this wavefront. We demonstrate the interferometer by measuring a series of different wavefront shapes using coherent light.

Interferogram of the sheared wavefronts

Interferogram of the sheared wavefronts

A self-referencing inteferometric method of wavefront sensing based on lateral shearing interferometry, able to measure the local slope of a wavefront is described.

For this, a deformable mirror is used to manipulate the testing wavefront and a Murty plane-parallel plate interferometer to analyze this wavefront. We demonstrate the interferometer by measuring a series of different wavefront shapes using coherent light.

Mica crystal viwed through the Fizeau interferometer

Mica crystal viwed through the Fizeau interferometer

Birefringence measurement

Birefringence is formally defined as the double refraction of light in a transparent, molecularly ordered material, which is manifested by the existence of orientation-dependent differences in refractive index. Many transparent solids are optically isotropic, meaning that the index of refraction is equal in all directions throughout the crystalline lattice. Examples of isotropic solids are glass, table salt (sodium chloride, illustrated in many polymers, and a wide variety of both organic and inorganic compounds.

Mica crystal viwed through the polarizing microscope

Mica crystal viwed through the polarizing microscope

Birefringence measurement

Birefringence is formally defined as the double refraction of light in a transparent, molecularly ordered material, which is manifested by the existence of orientation-dependent differences in refractive index. Many transparent solids are optically isotropic, meaning that the index of refraction is equal in all directions throughout the crystalline lattice. Examples of isotropic solids are glass, table salt (sodium chloride, illustrated in many polymers, and a wide variety of both organic and inorganic compounds.

m-line setup

m-line setup

m-line setup

Thin film deposition lab

Thin film deposition lab

Thin film deposition lab

ZrC plasma plume1

ZrC plasma plume1

ZrC plasma plume1

ZrC plasma plume2

ZrC plasma plume2

ZrC plasma plume2

Plasma and RF 1

Plasma and RF 1

Plasma and RF 1

Plasma and RF 2

Plasma and RF 2

Plasma and RF 2

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