Time-resolved intensity and spectral changes in a wide-ridge terahertz quantum cascade laser by optical pulse injection
Time-resolved intensity and spectral changes in a wide-ridge terahertz quantum cascade laser by optical pulse injection
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通过光脉冲注入宽脊太赫兹量子级联激光器的时间分辨强度和光谱变化
DOI：
10.7567/jjap.55.102701
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发表时间：
2016
影响因子：
1.5
通讯作者：
I. Hosako
中科院分区：
文献类型：
--
作者：
Y. Sakasegawa;S. Saito;N. Sekine;A. Kasamatsu;M. Ashida;I. Hosako
报道了波长为800 nm的光脉冲通过腔面注入多模太赫兹量子级联激光器时，产生的光强和光谱变化.我们发现，光生载流子，通过调制的子带间增益，增加阈值电流高达0.2 A，并导致光谱的变化，使各个峰值的多侧模光谱的幅度不同的比率。研究发现，电子-空穴对的间接复合和热弛豫的时间尺度分别为10700 ns和1010 µs，参与恢复动力学。
We report the intensity and spectral changes in a multi-mode terahertz quantum cascade laser induced by injecting λ = 800 nm optical pulses through a cavity facet. We find that photogenerated carriers, via modulation of the intersubband gain, increase the threshold current by up to 0.2 A and cause spectral changes such that the individual peaks of the multi-lateral-mode spectra are varied in amplitude with different ratios. It is found that the indirect recombination of electron–hole pairs and thermal relaxation on timescales of ∼700 ns and ∼10 µs, respectively, are involved in the recovery kinetics.
影响因子：
1.1
作者：
Ishigaki, K.;Shiraishi, M.;Arai, S.
通讯作者：
Arai, S.
影响因子：
3.8
作者：
Nagatsuma, Tadao;Horiguchi, Shogo;Takahashi, Hiroyuki
通讯作者：
Takahashi, Hiroyuki