Jak can femtosekunda lasery poprawy szkło cięcie?
The distinguishing characteristic of glass is its hard and brittle nature, which poses a significant processing challenge. Traditional mechanical glass cutting techniques such as diamond wheel cutting, sandblasting or water jet processes cut imprecisely, lack regularity in the edges, and have large and asymmetrical residual edge stresses during the cutting process, resulting in micro-cracks, dust, and debris on the edges of glass processed in this manner. For many applications, tiny cracks caused by chips and localized stresses will cause device failure, and thus post-pass edge grinding and polishing must be performed to strengthen the edges to achieve acceptable quality. In addition, mechanical knife wheel processing also requires some auxiliary agents to assist in cutting, which may stick to the finished edge and require treatment such as water cleaning or ultrasonic cleaning. The subsequent treatment process and low yield rate will increase the cost of the finished glass product.
W dodawanie, kiedy pojedynczy kawałek z szkło jest rozcieńczony do mikron poziom (UTG szkło), te tradycyjne mechaniczne tnące metody będzie nie dłużej be stosowalne. The unique advantage of ultrafast lasers make it possible to process these hard, kruche and ultra-cienkie glass materials, and femtosecond lasers with appropriate parameters can cut efficient with with a very limited number of edges in a single pass [1]. To jest prawda parzysta dla gruba szkło, gdzie femtosekunda lasery oferta alternatywa do inne szkło tnie techniki.
Femtosekunda laser szkło cięcie: Jak robi it praca?
Ultrakrótki laser impulsy kombinowane z a podobne do Beziera wiązka puszka być używane do szkło przetwarzanie. The Bessel beam has a cieńsze belka talia and longer ogniskowe głębokość niż a gaussowskie wiązka, and is able do jednocześnie absorbujące energia of ultrashort pulses along along the cały thickness of the glass glass Bursts allows the glass to undergo more efficient laser absorption and results in the cracks required to cut through the glass from góra do dół. Używanie to femtosekunda laser z a Bessel-like beam, for example, glass cutting can be performed regardless of whether the trajectory is straight or curved.
The Amplitude applications team has developed a femtosecond laser-based process to precisely control the direction of the fracture and the accompanying glass processing optics, and to use extended fracture generation to improve the processing efficiency of the glass cutting process. The process can be used to cut thin glass <200μm), thick glass (>1mm) lub parzysty wielowarstwowy szkło lub a odmiana łatwo oddzielny kruchy przezroczysty materiały z niski powierzchni chropowatość (<1μm) and no chips and chipping.
<1 mm nanolaminate glass, for example), the use of sub-picosecond or femtosecond pulses can produce longer extended cracks for more efficient processing. For cutting thin glass, cutting speeds of more than ~1 m/s along a straight line and more than 100 mm/s for curved parts can be achieved with a laser power of only 10 W. For ultra-thin glass, cutting energies of less than 30 uJ can yield cut edges with chipping of less than 0.5 um. The process can also be used to cut thick glass or multiple layers of glass (>1 mm) in a single pass.
Eksperymentalne badania przeprowadzone przez amplituda proces zespół mają pokazało że najbardziej wydajne przetwarzanie parametr jest do generować a wybuch z 4 do 6 impulsy z a płaskie energetyczne rozkład z podimpulsy. w kombinacja z pewne optyczne konfiguracje a szkło grubość 3 mm może być przetworzone w jeden przejście. dla tego badania, an amplitudy tangora laser była używana, wyposażona z z the femtoburst ™️ function, which allows the user to program the individual sub-pulse amplitudes in the burst pattern to precisely modulate the burst energy distribution for a detailed study of the material energy absorption in a customized manner.
The process can be used in a variety of applications such as mobile device display manufacturers, who use thinner glass or multi-layer glass, and in consumer electronics where coated glass is often used and must often be processed with curved corners, contoured shapes and cuts, and where the short pulse processing characteristics of the femtosecond pulses can effectively reduce the heat affected zone of the coating layer. Many mechanical or other laser methods cannot provide the level of precision and quality required for such products. Our technology can also be used to cut thicker glass for the medical industry or even tempered glass for screen protection or the automotive industry.
W dodawanie, z rozwój z szkło przewlekane technologia (TGV) w niedawne lata, it be the direction and trend to use glass through-hole substrates in 3D integrated package adapter boards, MEMS and Mini LED/Micro LED, etc. In addition, there is also a special demand for high depth-to-diameter ratio hole types in optical communication, consumer electronics, bio-chips, etc. In TGV technology, Bessel beam processing module is an indispensable tool, using this technology can achieve micron or even sub-micron, super 250,000 per square centymetr ultra-high density through-hole, so dense and high-speed processing of glass through-hole requires 1. micro-hole between the laser processing can not appear in the thermal stress caused by micro-crack, 2. hole spacing must be precisely controlled. Femtosekunda lasery oferta a wąski impuls szerokość do kontrola mikropękanie (<350fs) while providing an excellent solution to precisely control the position accuracy of the trigger pulse on the material using the FemtoTrig® feature developed by Amplitude's technical team, synchronized with the oscillator clock (fosc:40Mhz, jitter. 25ns) to achieve higher machining position accuracy (100m/ s, Position Error: 2.5um) while maintaining a constant single pulse energy (<4% energy fluctuation) for high speed pulse machining.
Amplituda's techniczny i proces zespoły opracowują i ulepszają femtosekundy laser przetwarzanie metody przez włączanie i ciągle odkrywanie the internal properties of the material, and by customizing matching optical modules and laser solutions to obtain higher quality laser material processing results. Aplikacja laboratorium w Suzhou, Chiny mogą dostarczyć klienci z próbką przetwarzaniem testami do zweryfikować wykonalność z technologii, i również dostarczyć klienci and partnerzy z współpracować rozwój of femtosekunda laser aplikacja technologia and praktyczne szkolenie on femtosekunda laser przetwarzanie. przez aktywnie otwarcie up współpraca z chińskie uniwersytety i badawcze instytucje, celujemy rozwijać więcej lokalne talenty.
