Powerful 1-µm 1-GHz optical frequency comb.

A self-referenced optical frequency comb is presented based on Kerr-lens mode-locking of ytterbium-doped CALGO. The robust source delivers 3.5 W average power in 44 fs-long pulses at 1 GHz repetition rate.

Absolute frequency referencing in the long wave infrared using a quantum cascade laser frequency comb.

Optical frequency combs (OFCs) based on quantum cascade lasers (QCLs) have transformed mid-infrared spectroscopy. However, QCL-OFCs have not yet been exploited to provide a broadband absolute frequency reference. We demonstrate this possibility by performing comb-calibrated spectroscopy at 7.

Protected generation of dissipative Kerr solitons in supermodes of coupled optical microresonators.

A photonic dimer composed of two evanescently coupled high- microresonators is a fundamental element of multimode soliton lattices. It has demonstrated a variety of emergent nonlinear phenomena, including supermode soliton generation and soliton hopping. Here, we present another aspect of dissipative soliton generation in coupled resonators, revealing the advantages of this system over conventional single-resonator platforms.

Relationship Between Teams' Leader-Member Exchange Characteristics and Psychological Outcomes for Nurses and Nurse Managers: A Cross-Sectional Study in Japan.

Introduction: The Leader-Member Exchange (LMX) theory, based on the social exchange theory, relates to positive psychological states among nurses. However, the influence of various LMX qualities coexisting within a team on nurses or nurse managers is still uncleared.

Objective: This study examines the relationship of nurses and nurse managers' psychological states with the average LMX and LMX dispersion among nurses in their units.

Coherently-averaged dual comb spectrometer at 7.7 µm with master and follower quantum cascade lasers.

We demonstrate coherent averaging of the multi-heterodyne beat signal between two quantum cascade laser frequency combs in a master-follower configuration. The two combs are mutually locked by acting on the drive current to control their relative offset frequency and by radio-frequency extraction and injection locking of their intermode beat signal to stabilize their mode spacing difference. By implementing an analog common-noise subtraction scheme, a reduction of the linewidth of all heterodyne beat notes by five orders of magnitude is achieved compared to the free-running lasers.