Embedded dots inside glass for optical film using UV laser of ultrafast laser pulse

Pan, Cheng‐Tang; Liu, Z.H.; Wu, Yulun

doi:10.1016/j.optlaseng.2011.03.014

Cited by 5 publications

(2 citation statements)

References 22 publications

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“…To improve the process precision, the UV pulse duration was also paid much attention. When the pulse duration was greater than 15 ns, precision could not be guaranteed for the overly high pulse energy, but when the pulse duration was less than 2 ns, the pulse energy was too weak to destroy the molecular binding energy [6,7]. Therefore, high-power UV lasers operating at ultrahigh repetition rate with moderate pulse duration have obvious advantages in high-speed precision manufacturing.…”

Section: Introductionmentioning

confidence: 99%

High-power 355 nm ultraviolet lasers operating at ultrahigh repetition rate

Chen¹,

Liu²,

Yan³

et al. 2012

Laser Phys. Lett.

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In this letter, we demonstrate a novel 355 nm ultraviolet (UV) laser operating at ultrahigh repetition rate from 300 kHz to 1 MHz. The hybrid fiber-MOPA-bulk amplifiers based IR source exhibits a high average power of 105 W with near-diffraction-limited beam quality, narrow linewidth and high polarization extinction ratio. Two-cascaded LBO crystals are employed for high efficiency frequency tripling, and a maximum 43.7 W of average UV power is achieved at 400 kHz, corresponding to a conversion efficiency as high as 41.6%. The pulse duration of the UV pulse can be tuned from 5 to 10 ns with good pulse peak stability (better than 2.2% (RMS)).

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Section: Introductionmentioning

confidence: 99%

High-power 355 nm ultraviolet lasers operating at ultrahigh repetition rate

Chen¹,

Liu²,

Yan³

et al. 2012

Laser Phys. Lett.

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show abstract

“…A new fabrication process with UV laser direct writing method was developed to embed microstructures inside the glass. The optical properties of glass such as reflection and refraction indexes can be modified [5]. A modified hot-embossing process fabricated microtriangular-pyramidal array and the optical film of PMMA with microtriangular-pyramidal array were packaged on LED to improve its lighting uniformity and luminance [6].…”

Section: Introductionmentioning

confidence: 99%

Compound Optical Film Using Gray Scale Mask Embedded with Microvoids

Pan

Chen

et al. 2012

Advances in Condensed Matter Physics

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This study presents a compound optical film to improve luminance and uniformity to apply in side-LED (light-emitting diode) backlight module. LIGA (lithographie galvanoformung abformung) technology, soft lithography, and homemade gray scale mask were combined to fabricate microlens array. Optical film with variable size microlens array embedded with microvoids was designed and manufactured. FRED software was used to simulate optical performance. Microvoids were quantitatively embedded in the PDMS (polydimethylsiloxane) optical film. Under the quantitative control of air pressure, those microvoids inside the optical film can cause light diffusion. The compound optical film with embedded microvoids, multiaspect ratio, and variable size microlens array can be fabricated quickly without substrate. Luminance colorimeter BM-7A from TOPCON was used to carry out the optical measurement. According to the measured data, the compound optical film with embedded microvoids can enhance the luminance up to 5% and the uniformity up to 6.5% ~ 8.4%. The optical efficiency can be improved via the compound optical film.

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Study on the Pr:KYF ultraviolet laser at 305 nm pumped by blue laser

Zhang

et al. 2012

Optoelectron. Lett.

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Embedded dots inside glass for optical film using UV laser of ultrafast laser pulse

Cited by 5 publications

References 22 publications

High-power 355 nm ultraviolet lasers operating at ultrahigh repetition rate

High-power 355 nm ultraviolet lasers operating at ultrahigh repetition rate

Compound Optical Film Using Gray Scale Mask Embedded with Microvoids

Study on the Pr:KYF ultraviolet laser at 305 nm pumped by blue laser

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