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- lasing threshold current 激光抽运阈值电流
- Though the lasers with lattice-mismatch cladding layers still have low threshold current density, the gain is too small to support ground state lasing. 所制成的雷射虽然也有很小的起振电流，但由于增益较小无法在基态放光。
- The lasing wavelength is 1.33 mm and threshold current density is 248A/cm2. This is the first report on successful fabricating of long wavelength CW QDs lasers in china. 阈值电流密度为248A/cm2.;这是国内首次报道室温连续激射量子点长波长激光器
- The team says that it reduced the lasing threshold by aligning a single QD state with a high quality cavity mode. 该研究小组表示，他们使一个量子点能态对准高Q值共振腔模，藉此降低雷射的阀值。
- The numerical results show that the lasing threshold of an eigenmode depends on the EGDF, different eigenmode has different value of EGDF. 有效增益分布因子描述了光子晶体中增益介质的空间分布特性。
- With suitable design of size and position of the gain medium, higher EGDF can be obtained, which directly leads to a lower value of lasing threshold. 不同的本征模具有不同的有效增益分布因子,那些有效增益分布因子较大的模式具有较低的阈值。
- The minimum CW threshold current(I_(th))of the LD is 20mA at room tempe- ratue,with the typical value of 30mA. 在室温 CW 工作条件下,该激光二极管的最低阈值电流为20mA,典型值为30mA。
- The results show that these newly made DFB-LDs have threshold current as low as 7mA, 35% lower than the former LPE-buried DFB-LDs. 测试结果显示:采用新工艺制作的DFB激光器的阈值电流较LPE掩埋的DFB激光器下降了35%25;达到7mA.
- It is found that optimization of the structure parameters of ridge waveguide (RWG) can decrease the threshold current of RWG laser diode. 通过优化脊形波导的结构参数可以降低脊形波导激光器的阈值电流,提出了实现亚微米脊宽,从而降低阈值电流的方法。
- The temperature dependence of threshold current is not described by a single exponential term with a characteristic temperature. 量子点的临界电流对温度关系无法用单一特徵温度描述，特徵温度会随温度改变。
- Double heterostructure(DH)realizes the complete confinement of carriers and light,decreasing threshold current density substantially. 双异质结构实现了光和载流子的完全限制 ,使阈值电流密度大幅度下降。
- In particular, there is an optimal well number corresponding to the lowest threshold current density for MQW structure in the microcavity lasers. 特别是在微腔多量子阱结构中存在一个最佳阱数对应着阈值电流密度的最小值。
- The results discover that AlInGaAs strained quantum well lasers excel AlGaAs laser in slope efficiency,threshold current and characteristic temperature and so on. 结果发现AlInGaAs应变量子阱激光器在斜率效率、阈值电流、特征温度等方面随温度变化的特性都优于AlGaAs激光器.
- The introduce of band-gap discontinuity in heterostructure can obtain high injection ratio, decrease further threshold current and increase the output power. 异质结构引进的带隙差可以实现高注入比、进一步降低了阈值电流，同时提高了输出功率。
- The effects of device temperature on the laser threshold current, external differential quantum efficiency (DQE), and output wavelength are also investigated. 研究了器件温度对于激光阈值电流、外微分量子效率和输出波长的影响。
- The numerical results show that the threshold current depends on the skin depth of the waveguide wall, the magnetic field detuning and the perpendicular-to-parallel velocity ratio of the electrons. 研究结果表明：绝对不稳定性起振电流与损耗波导的集肤深度有关，选择有较大的集肤深度的损耗波导可以提高绝对不稳定性起振电流；
- The variation with temperature of the two different LDs' characteristic parameters include output power, threshold current, slope efficiency and the wavelength were analyzed contrastively. 测试结果表明，新型双波长隧道再生激光器有高输出功率、高斜率效率以及双激射波长等优点；
- " Test method for continuous lasing threshold, slope efficiency and output power of Nb: YAG laser rods" GB/T11297.;5-1989掺钕钇铝石榴石激光棒连续激光阈值、斜率效率和输出功率的测量方法
- Test method for normal pulse lasing threshold and slope efficiency of Nd: YAG laser rods GB/T11297.;4-1989掺钕钇铝石榴石激光棒长脉冲激光阈值及斜率效率的测量方法
- The cabin has a flat stone for a threshold. 这间小屋用一条扁平的石头做门槛。
