Saturable absorbers, which operate at terahertz (THz) frequencies, are beginning to open doors in the development of photonic devices, namely in passively mode-locked THz micro-sources. Now, a team of ...

Mode-locked fibre lasers, featuring ultrafast temporal information, ultrahigh peak energy, and exceptional stability, have become essential tools in modern optics and industries, including ...

Our research plan is to study and develop semiconductor saturable absorber mirrors (SESAMs), using quantum wells or quantum dots (nanometer scale sizes) for generating ultra-short optical pulse ...

Passive mode-locked technology utilizes saturable absorbers’ nonlinear absorption effect to regulate the cavity’s loss and phase to generate mode-locked pulses. Graphene has a unique energy bandgap ...

A terahertz saturable absorber has been created using printable graphene inks with an order of magnitude higher absorption modulation than other devices produced to date. Graphene Flagship researches ...

A passive mode-locking device, the saturable absorber mirror (SAM), can be used to mode-lock a wide range of laser cavities. A SAM consists of a Bragg-mirror on a semiconductor wafer like GaAs, ...

A broadband saturable absorber based on carbon nanotubes can be used with fibre lasers emitting anywhere between 1 and 2 microns. By combining a thin-film of carbon nanotubes (CNTs) with a highly ...