By using strong optical injection locking, we report resonance frequency enhancement in excess of 100 GHz in semiconductor lasers. We demonstrate this enhancement in both distributed feedback (DFB) lasers and vertical-cavity surface-emitting lasers (VCSELs), showing the broad applicability of the technique and that the coupling Q is the figure-of-merit for resonance frequency enhancement. We ha...

Electrically pumped vertical cavity surface emitting lasers (VCSELs) can produce hundreds of mW's of 976 nm CW output in a TEM00 mode when operated with an external cavity configuration. During pulsed operation (<50ns) a significant increase in the peak power is observed, compared to CW operation. High peak powers makes these lasers very well suited for intra-cavity frequency doubling with a no...

We report the demonstration of compact fluidic fibre lasers based on capillary tubes and photonic crystal fibres, featuring single channel and multiple laterally integrated fluidic lasers respectively. Their preparation was based on capillary action and lasing occurred without the need for external mirrors or lithographically defined microstructures. The fibre lasers were found to be tunable by...

Articles you may be interested in Temperature modulation molecularbeam epitaxy and its application to the growth of periodic index separate confinement heterostructure InGaAs quantumwell lasers Periodic index separate confinement heterostructure InGaAs/AlGaAs multiple quantum well laser grown by organometallic vapor phase epitaxy Appl. Very low threshold single quantum well gradedindex separate...

Lasers are now common place in day to day life and have been used across the sciences since their description as far back as 1917. Initially met with some sceptism, their use in medicine and in particular the surgical specialty has only increased. Their use in the future is also likely to expand as we continue to improve their efficiency and technology surrounding them. This review aims to intr...

Semiconductor lasers are the most widely used type of lasers. The very broad area of applications makes them almost indispensable in our every day life. We find them in CD and DVD players, in laser printers or in supermarkets. Semiconductor lasers can be very easy integrated in the optical systems and they have found numerous applications in science, technology, industry and medicine. We should...

Theodore maiman in 1960 invented the ruby laser, since then lasers technology has holded the attention in dental practice and has revolutionised dental treatment. Lasers have been used in initial periodontal therapy, surgery, and also in implant treatment. Lasers have various periodontal applications including calculus removal; for removal of the pocket epithelium; soft tissue excision, incisio...

Optoelectronic integrated circuits incorporating twin ring diode lasers with InAs/InGaAs/GaAs quantum-dot active region have been fabricated and characterized. Directional control and unidirectional operation of ring diode lasers are demonstrated by forward biasing an S-section waveguide incorporated within the ring cavity. Mode-beating spectra from individual ring diode lasers are observed at ...

Temperature invariant output slope efficiency and threshold current sT0=`d in the temperature range of 5–75 °C have been measured for 1.3 μm p-doped self-organized quantum dot lasers. Similar undoped quantum dot lasers exhibit T0=69 K in the same temperature range. A self-consistent model has been employed to calculate the various radiative and nonradiative current components in p-doped and und...

AbstructWe demonstrated the successful operation of longwavelength InGaAsP low threshold-current index-coupled and gain-coupled DFB lasers grown by chemical beam epitaxy (CBE). For index-coupled DFB lasers, buried-heterostructure six-QW DFB lasers (250 pm long and as-cleaved) operated at 1.55 Lrm with CW threshold currents 10-15 mA and slope efficiencies up to 0.35 mW/mA (both facets). A side-m...