(140.5965) Semiconductor lasers
One and two photon pumped organic semiconductor lasers
... These bisfluorene dendrimers show excellent lasing performance and as such have great potential for use in more compact organic semiconductor lasers. They do however require excitation at ultraviolet ...
185
Organic semiconductor lasers : compact hybrid light sources and development of applications
... To minimize the threshold densities of organic semiconductor lasers, the gain medium was carefully selected. Different polymers and blends were characterized. The yellow emitting fluorene-based copolymer ...
238
Discretely Tunable Semiconductor Lasers Suitable for Photonic Integration
... tunable semiconductor lasers will play an impor- tant part in next generation optical ...Tunable lasers are essential in wavelength-agile networks and as a means to reduce costs as sparing ...
6
Ultrafast switch-on dynamics of frequency-tuneable semiconductor lasers
... frequency-tuneable semiconductor lasers are an important technology that have found applications across the electromagnetic ...feedback lasers is restricted since the grating period is fixed and there ...
8
Dynamic modal analysis of monolithic mode-locked semiconductor lasers
... monolithic semiconductor laser diodes (LDs) attracts considerable interest, first, for an increasing number of practical applications in microwave optoelectronics, ...ML lasers), through intermediate level ...
14
Investigation and Application of Microscale Semiconductor Lasers and Cavities
... Due to the small size of these optical cavities and the limited number of modes seen below thresh- old, one would expect that the fraction of spontaneous emission going into the lasing mode (β) may be quite large for ...
156
Optical phase-lock loops using semiconductor lasers
... linewidth lasers (order of lOOkHz or less). This was achieved using gas lasers like CO 2 and HeNe, solid state lasers like YAG lasers and semiconductor lasers using external ...
174
Polarization fluctuations in vertical-cavity semiconductor lasers
... We report, theoretically and experimentally, how polarization fluctuations in vertical-cavity semiconductor lasers are affected by optical anisotropies. We develop a spin-eliminated ~ class A ! description ...
15
Vertical external cavity semiconductor lasers
... Indeed, pulsed semiconductor lasers seldom use their broad intrinsic gain bandwidth to full advantage in the generation of short pulses. The mode-locked VECSELs described above typically exhibit rather ...
11
Photonic crystals as functional mirrors for semiconductor lasers
... 1305 nm. Figure 9.9 shows the output spectra and beam profiles over a range of pump currents for the device. The device has three distinct operating phases. The first and most obvious of these is the sub-threshold phase. ...
172
Studies on the Effective Physical Parameters for Chirp Reduction in Optical Injection Locked Semiconductor Lasers
... Injection locking of semiconductor lasers has been actively investigated recently. Theoretical calculations show that it is possible to increase laser bandwidth and to reduce noise and chirp with proper ...
5
Optoelectronic Control of the Phase and Frequency of Semiconductor Lasers
... A large part of this work has been collaborative, and I thank the number of re- searchers with whom I have benefited from working. Dr. Wei Liang was instrumental in helping me develop a good understanding of the ...
214
Highly-photostable and mechanically flexible all-organic semiconductor lasers
... The operating lifetime under ambient conditions of mechanically-flexible organic semiconductor lasers based on monodisperse star-shaped oligofluorenes has been improved by using two approaches. A flexible ...
14
Competition, knowledge spillover, and innovation: technological development of semiconductor lasers, 1960 1990
... on Semiconductor Lasers to examine the research community of the semiconductor ...on semiconductor lasers all over the world and describes them in quantitative terms of the development ...
290
Bifurcation scenarios in semiconductor lasers subject to optical injection
... The physically meaningful values of the linewidth enhancement factor α = 5, pump current P = 1 and the ratio of photon and carrier lifetime T = 1000 will be used throughout. It is of course an exciting question how these ...
31
High-Coherence Hybrid Si/III-V Semiconductor Lasers
... In this work, we developed a new type of semiconductor laser with superior phase coherence to state of the art commercial DFB lasers. This breakthrough performance is enabled by a fundamentally new approach ...
194
Electrical and Optical Characteristics of Semiconductor Lasers Using Differential Resistance Measurements
... From this table, note that: the series resistance of the device can be precisely measured at very low bias currents, the exact laser threshold can be determined by several methods (in[r] ...
120
Design and characterization of widely tunable semiconductor lasers based on etched slots
... The laser structure consists o f five A lG alnA s quantum w ells that have a em ission peak around 1550nm. The active region is surrounded by n and p doped InP cladding layers. The w aveguide ridge is 2.5 >im wide and ...
215
A study of active mode-locking of external cavity semiconductor lasers
... O u r second external cavity configuration and m easurem ent set-up are presented in Fig. 6.3. The semiconductor laser used in th is experim ent was the B TR L device (ser. no. 10315) w hich was also used fo r F M ...
225
Effect of spatial hole burning on output characteristics of high power edge emitting semiconductor lasers : a universal analytical estimate and numerical analysis
... As discussed in [12.], the threshold modification by LSHB is absent, and thus , if the gain-carrier density dependences of the gain and (non-stimulated) recombination rate are both linear; however in realistic Quantum ...
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