Optical pumping

About: Optical pumping is a research topic. Over the lifetime, 14289 publications have been published within this topic receiving 236373 citations.

Optical pump system for a laser source, and laser source comprising such an optical pump system

Abstract: The system has a pump diode (12) emitting a pump beam (5) whose wave length varies with temperature, and a collimation unit (13) associated with the diode. A selective mirror (14) selects a wavelength of the diode and has a set of reflectivity peaks for locking the operation of the diode on one of the peaks during a change in temperature of the diode such that the system emits the beam, where the wavelength of the beam varies in steps corresponding to a set of preset wavelengths during the change in temperature.

Terahertz sources based on the intracavity wave mixing of self-generated fields in semiconductor lasers

Abstract: A concept of intracavity nonlinear wave mixing using modes generated in semiconductor injection lasers as an intracavity optical pump for the mixing is developed. This approach utilizes very high nonlinear susceptibilities of III-v semiconductors that cannot be used as a passive externally pumped crystal because of the strong absorption of the optical pump and the absence of a convenient phase-matching scheme. In particular, it opens prospects for mastering the terahertz frequency range on the basis of a standard heterolaser technology. We review recent theoretical and experimental investigations in the field and discuss applications.

Design of optical pumping scheme for quantum-dot semiconductor optical amplifiers

Abstract: In this study, design of optical pumping (OP) scheme for quantum-dot semiconductor optical amplifiers (QD-SOAs) is investigated. To evaluate the static and dynamic responses of the QD-SOA under OP, a non-linear state-space model is derived in which the effects of the homogeneous and inhomogeneous broadening of the gain medium and the spectral dependence of the input signals are taken into account. Using this model, the effects of the wavelength and power of the pump signal and the homogeneous and inhomogeneous linewidths are studied in detail. Simulation results demonstrate that optimal operation of the QD-SOA under the OP scheme is realised if the detuning between the pump wavelength and the input signal wavelength is constant (around 100 nm for our investigated device). The authors found that OP scheme can be employed for non-linear signal processing applications, where the superiorities of the OP against the electrical pumping appear for small values of the homogeneous and inhomogeneous linewidths.

Optical fiber optofluidic dye laser

Abstract: The invention discloses an optical fiber optofluidic dye laser. The optical fiber optofluidic dye laser comprises a pump optical source, a pumping optical fiber, a first reflecting mirror, a dye hollow-core optical fiber and a second reflecting mirror which are connected with one another in sequence are arranged along a light beam emitting direction of the pump optical source, dye in sealed space which is formed by the first reflecting mirror, the dye hollow-core optical fiber and the second reflecting mirror serves as a laser gain medium, and a light beam shaping device which is used for adjusting wavefront phase positions of pump light beams is mounted between the pumping optical fiber and the first reflecting mirror. The optical fiber optofluidic dye laser has advantages of existing optofluidic lasers, and meanwhile, has the advantages that the system structure is simple, the miniaturization degree is high, the preparation technology is simple, axial symmetry optical pumping is achieved, the pumping optical energy utilizing ratio is high, the application range is wide, qualities of the light beams are good, output beam modes are controllable, the usage is flexible, and the like.