The oscillation threshold condition for an extended cavity laser is given by (92)rf1reffeff(ν)exp|(gth−αint)Lint+i2πν τext|=1, where rf1 is the reflectance of the outer facet and reff(v) is the freque
laser tuningmicrocavity lasers/ cavity sizedetuning effectsthreshold gainoscillation frequencythreshold conditionone-dimensional planar microcavity laseroutput couplinghomogeneously broadened atomsThe threshold condition of a one-dimensional planar microcavity laser with output coupling is analyzed semiclassically. The...
The fabricated nanoisland laser was characterized by pumping with a 980-nm laser diode at RT in CW condition with no intentional cooling. We used a microscope objective lens ( Â 50) with NA of 0.85 to focus the pump beam and to collect the emitted light from the sample at the same ...
At a pumping level that is strong enough to create a population N2=N1=N0/2 in the upper laser level, the optical gain is zero. To satisfy the oscillation condition the pumping rate has to be further increased until (四)短脉冲激光器的阈值泵浦能量 四能级激光器与三能级激光器的比较 三能级...
In this paper, the stability condition of optical resonator is introduced, the power losses of stable resonator and the threshold condition of optical oscillation is discussed, and the formulation of the relationship between the gain coefficient of work substance and the losses factor is derived.关键...
When the laser oscillation was observed by top-viewing microscopy, no laser spectra could be obtained; only fluorescence was observed. Therefore, the intensity profiles of the microdisk with an ink-jet-printed spot shaped like a top-flat plano-convex lens were revealed by three-dimensional NS-...
The minimum level of some input quantity needed for some process to take place, such as a threshold energy for a reaction, or the minimum level of pumping at which a laser can go into self-excited oscillation. (physiology) The minimum level of a stimulus that will evoke a response in ...
摘要: The threshold condition for the onset of amplified spontaneous emission is derived and experimentally verified in the 3.39 mu m He-Ne and the 0.614 mu m Ne systems. A short discussion is given concerning the confusion between this type of radiation and superradiance....
1. A method for simultaneously controlling the oscillation of a large number of modes of a multi-mode laser with spatially separated modes such that for each such mode there exists a region of spatial separation, where the intensity of said mode is relatively high and the intensity of all oth...
2. For the laser system performance, the threshold condition is of great significant. 对于激光系统性能而言,激光工作阈值条件具有非常重要的意义。3. This paper deals with the threshold condition of double resonance parametric oscillation when the absorption coefficient of the signal light is different ...