Master-holograms recorded with pulsed laser on photoresist

Zacharovas, Stanislovas; Adlienė, Diana; Bakanas, Ramūnas; Šeperys, Rimas; Narmontas, Pranas

doi:10.1117/12.2044365

Cited by 3 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2). 15 A series of test holograms (white image squares) with a size of 1 × 1 cm and a hogel size of 200 × 200 μm has been written using a 440-nm pulsed laser DWDH technique on different photoresist layers deposited on glass plates (Fig. The λ∕2 wave plates together with TFP form the beam splitter and optical attenuators.…”

Section: Holograms Recording and Characterizationmentioning

confidence: 99%

“…In our primary investigations, 14,15 it was reported that transmission holograms can be successfully recorded in commercially available positive photoresists using a single pulse of 440-nm pulsed laser beam at low energy density (approximately 8 mJ∕cm 2 ). However, the sensitivity of commercially available photoresists to continuous radiation is rather low (for λ ¼ 442 nm, E ¼ 65 − 150 mJ∕cm 2 is required).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Holograms recording with pulsed laser on diazonaphthoquinone-novolac-based photoresists and their nanocomposites

et al. 2014

Self Cite

View full text Add to dashboard Cite

Direct write digital holography technique (DWDH) using a single 440-nm pulsed laser exposure has been proposed to record master holograms on commercially available positive-tone photoresist systems based on a mixture of diazonaphthoquinone and novolac resin (DNQ-novolac) of different thicknesses. The DNQ-novolac nanocomposite doped with copper nanoparticles (CuNPs) films was also used. The method for numerical evaluation of hologram quality based on reflected beam diffraction intensity measurements was proposed and verified. It was found that all investigated photoresist nanocomposites were sensitive enough to record holographic structures at low single pulse laser exposures (from 3.3 to 18.0 mJ∕cm 2 ). Moreover, doping DNQ-novolac nanocomposite with CuNPs s increases its sensitivity to pulsed laser exposure by more than 30%. The potential of single pulsed laser exposures to record high quality master holograms on commercially available and metal nanoparticles doped photoresists with at least five times lower exposures values as compared to the continuous-wave laser exposures usually used to expose photoresist materials in holographic applications, opens the possibility to use pulsed lasers for quick master-originals origination for embossed holograms applying a DWDH technique or analog methods.

show abstract

Section: Holograms Recording and Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Holograms recording with pulsed laser on diazonaphthoquinone-novolac-based photoresists and their nanocomposites

et al. 2014

Self Cite

View full text Add to dashboard Cite

show abstract

Embossed Holograms

2015

Practical Holography

View full text Add to dashboard Cite

Recent Works on Direct-Write Digital Holography

Bakanas,

Nikolskij,

Bulanovs

et al. 2024

Latvian Journal of Physics and Technical Sciences

View full text Add to dashboard Cite

Direct-write digital holographic (DWDH) printing is a highly flexible technique for the generation of photoresist masters, which are required to produce the metallic shims used for the mass production of holograms in the security and packaging industries. Here we describe a new type of holographic feature, which can be combined with any other feature printable using DWDH: full-parallax, full-colour transmission masters containing limited animation. We will also describe a technique to print the fringe pattern of each hogel without using a reference beam. By programming the required fringe calculation algorithm on a graphics card using CUDA, we obtain acceptable calculation times. The advantage of using such direct fringe writing is that once again DWDH allows extra features to be written onto a master and combined with other features to produce a stronger security solution. Finally, we present results concerning the use of hogel image dithering to improve the grey-scale performance of DWDH printers.

show abstract

Master-holograms recorded with pulsed laser on photoresist

Cited by 3 publications

References 3 publications

Holograms recording with pulsed laser on diazonaphthoquinone-novolac-based photoresists and their nanocomposites

Holograms recording with pulsed laser on diazonaphthoquinone-novolac-based photoresists and their nanocomposites

Embossed Holograms

Recent Works on Direct-Write Digital Holography

Contact Info

Product

Resources

About