Local tuning of fused silica thermal expansion coefficient using femtosecond laser
نویسندگان
چکیده
منابع مشابه
Femtosecond laser micromachining of fused silica molds.
The use of low-energy femtosecond laser beam combined with chemical etching has been proven to be an efficient method to fabricate three-dimensional structures in fused silica. For high-volume application, this technology--like other serial processes--suffers from a moderate production rate. Here, we show that femtosecond laser can also be employed to fabricate silica molds and other patterned ...
متن کاملPolarisation-independence of femtosecond laser machining of fused silica
Laser direct processing of glass has been challenging due to the brittle nature and poor heat transfer characteristics of the material. With the advancement of ultrashort pulse lasers, laser direct machining of glass with smooth surface and free of microcracks has become a potential manufacturing technique in microfabrication of optical devices. In this paper, machining of microgrooves on fused...
متن کاملDirect welding of fused silica with femtosecond fiber laser
Development of techniques for joining and welding materials on a micrometer scale is of great importance in a number of applications, including life science, sensing, optoelectronics and MEMS packaging. In this paper, methods of welding and sealing optically transparent materials using a femtosecond fiber laser (1 MHz & 1 μm) were demonstrated which overcome the limit of small area welding of o...
متن کاملStructural Modification of Amorphous Fused Silica under Femtosecond Laser Irradiation
Non-linear absorption of femtosecond laser pulses enables the induction of structural changes in the interior of bulk transparent materials without affecting their surface. This property can be exploited for the transmission welding of transparent dielectrics, three dimensional optical data storages and waveguides. In the present study, femtosecond laser pulses were tightly focused within the i...
متن کاملFemtosecond laser absorption in fused silica: Numerical and experimental investigation
Single pulse transmissivity and reflectivity of fused silica irradiated by tightly focused 90 fs laser pulses at a center wavelength of 800 nm are numerically and experimentally investigated to study the role of nonlinear photoionization and avalanche ionization processes in free electron generation. The laser beam inside fused silica is modeled with a 2+1 -dimensional propagation equation whic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Materials
سال: 2019
ISSN: 2475-9953
DOI: 10.1103/physrevmaterials.3.053802