The extremely high peak intensity associated with ultrashort pulse width of femtosecond
laser allows us to induce nonlinear interaction such as multiphoton absorption and tunneling …

The femtosecond laser direct‐writing (FLDW) of waveguide circuits in glasses has seen
interest from a number of fields over the previous 20 years. It has evolved from a curiosity to …

Since the discovery that tightly focused femtosecond laser pulses can induce a highly
localised and permanent refractive index modification in a large number of transparent …

This paper reviews the recent advancements achieved using ultrafast laser inscription (ULI)
that highlight the cross‐disciplinary potential of the technology. An overview of waveguide …

The tremendous interest in the field of waveguide lasers in the past two decades is largely
attributed to the geometry of the gain medium, which provides the possibility to store optical …

The field of optically pumped planar waveguide lasers has seen a rapid development over
the last two decades driven by the requirements of a range of applications. This sustained …

A depressed cladding waveguide with record low loss of 0.12 dB/cm is inscribed in YAG: Nd
(0.3 at.%) crystal by femtosecond laser pulses with an elliptical beam waist. The waveguide …

Integrated optics, having the unique properties of small size, low loss, high integration, and
high scalability, is attracting considerable attention and has found many applications in …

Laser experiments were performed on buried, ridge-type channel waveguides in 8 at.%
thulium-doped, yttrium–gadolinium–lutetium co-doped potassium double tungstate. By …

We report on the fabrication of depressed cladding waveguide lasers in Nd: YAG
(neodymium doped yttrium aluminum garnet, Nd: Y_3Al_5O_12) ceramics microstructured …