SERS-Active Pattern in Silver-Ion-Exchanged Glass Drawn by Infrared Nanosecond Laser
Ekaterina Babich,
Vladimir Kaasik,
Alexey Redkov,
Thomas Maurer,
Andrey Lipovskii
Affiliations
Ekaterina Babich
Institute of physics, nanotechnology and telecommunications, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia
Vladimir Kaasik
Institute of physics, nanotechnology and telecommunications, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia
Alexey Redkov
Laboratory of structural and phase transformations in condensed media, Institute of Problems of Mechanical Engineering RAS, Bolshoy pr. V. O. 61, 199178 St. Petersburg, Russia
Thomas Maurer
Light, Nanomaterials, Nanotechnologies (L2n), Université de Technologie de Troyes & CNRS ERL 7004, rue Marie Curie 12, CS 42060, 10004 Troyes CEDEX, France
Andrey Lipovskii
Institute of physics, nanotechnology and telecommunications, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia
The irradiation of silver-to-sodium ion-exchanged glass with 1.06-μm nanosecond laser pulses of mJ-range energy results in the formation of silver nanoparticles under the glass surface. Following chemical removal of ~25-nm glass layer reveals a pattern of nanoparticles capable of surface enhancement of Raman scattering (SERS). The pattern formed when laser pulses are more than half-overlapped provides up to ~105 enhancement and uniform SERS signal distribution, while the decrease of the pulse overlap results in an order of magnitude higher but less uniform enhancement.
