opticallaser

Opticallaser is a term used in photonics to describe a class of laser sources designed for close integration with optical components and photonic circuits. The concept emphasizes compact, coherent light generation that can be readily coupled into waveguides or on-chip networks, enabling deployment in photonic integrated circuits (PICs) and miniature systems.

Technologies commonly encompassed by opticallaser include on-chip semiconductor lasers such as distributed feedback (DFB) and distributed Bragg reflector (DBR) devices, as well as vertical-cavity surface-emitting lasers (VCSELs) integrated with silicon or silicon photonics. Fiber lasers and externally cavity tunable diode lasers are also considered part of the opticallaser family when configured for tight coupling to waveguides or PIC platforms. These implementations pursue efficient light extraction, stable single-mode operation, and compatibility with established packaging and testing workflows.

Materials and manufacturing approaches reflect the need to combine gain media with passive photonic structures. Indium phosphide (InP) and gallium arsenide (GaAs) platforms support telecom wavelengths, while gallium nitride (GaN) and related materials extend operation into visible bands. Silicon and other substrates often require heterogeneous integration or wafer bonding techniques to incorporate III-V gain materials onto photonic circuits.

Performance characteristics of opticallasers focus on wavelength range, spectral linewidth, output power, efficiency, and beam quality. Tunability, polarization control, and thermal management are important for stable operation in dense photonic systems. Packaging and reliability are critical challenges, particularly for long-term stability in data communications, sensing, LiDAR, and medical devices.

See also: laser, photonic integrated circuit, semiconductor laser, LiDAR.