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A 10 μm quantum cascade laser is phase-locked to a remote ultrastable laser referenced to primary frequency standards using an optical frequency comb. The obtained relative stability of 2 × 10−15 is record-breaking in the mid-infrared region.
Researchers show that nonlinear polarization dynamics in a vertical-cavity surface-emitting laser inside an external cavity can result in the emission of temporal dissipative solitons.
Controlled growth of non-cubic, anisotropic solar cell materials, such as antimony selenide, is bringing new opportunities for efficient thin-film photovoltaics.
High-speed 2 μm digital optical receivers are brought closer to reality by an extended-response foundry-made monolithic silicon-on-insulator avalanche photodiode.
An inverse-design approach yields ultra-compact, high-performance photonic components from patterns of complex, subwavelength voids etched into silicon.
Nikola Tesla is known for his work on alternating current power systems, induction motors and wireless transmission but he is also an unsung hero of research into X-rays and light sources.
Kerr optical nonlinearities are known to be well suited for achieving optical isolation, but the fact that the degree of non-reciprocity is signal-level dependent brings new opportunities as well as limitations.
Charles Townes, the Nobel laureate acclaimed for his pioneering work on lasers and nonlinear optics, sadly passed away in January this year. Here I offer personal reflections of working with him as one of his graduate students.
This Review covers recent advances in the implementation of spin–photon interfaces in semiconductor quantum dots, nitrogen–vacancy centres in diamond and emerging systems such as colour centres in other wide-bandgap materials.
A silicon detector that is capable of long-wavelength photodetection at multi-gigabit per second data rates could prove useful for unlocking a new wavelength window for optical communications.
An end-to-end continuous-variable quantum key distribution system with an untrusted node is proposed. A proof-of-principle experiment shows that 10−1 secret key bits per relay use are distributed at 4 dB loss, corresponding to 20 km in optical fibre.
Solid-state X-ray detectors have enabled real-time diagnostics as well as reduced patient dose. Now researchers have shown that potentially inexpensive perovskites can be used for efficient X-ray imaging.
