Frequency-Noise Dynamics of Mid-Infrared Quantum Cascade Lasers

被引：42
|
作者：
Borri, Simone [1 ,2 ]
Bartalini, Saverio [1 ,2 ]
Pastor, Pablo Cancio [1 ,2 ]
Galli, Iacopo [1 ,2 ]
Giusfredi, Giovanni [1 ,2 ]
Mazzotti, Davide [1 ,2 ]
Yamanishi, Masamichi [3 ]
De Natale, Paolo [1 ,2 ]
机构：
[1] Ist Nazl Ottica, Consiglio Nazl Ric, I-50125 Florence, Italy
[2] European Lab Nonlinear Spect, I-50019 Sesto Fiorentino, Italy
[3] Hamamatsu Photon KK, Cent Res Labs, Hamamatsu, Shizuoka 4348601, Japan
来源：
IEEE JOURNAL OF QUANTUM ELECTRONICS | 2011年 / 47卷 / 07期
关键词：
Frequency dynamics; frequency noise; physics of semiconductors; quantum cascade lasers; RELATIVE INTENSITY NOISE; SEMICONDUCTOR-LASERS; SEMICLASSICAL THEORY; SPECTROSCOPY; LINEWIDTH; AM;
D O I：
10.1109/JQE.2011.2147760
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
By measuring the frequency-noise power spectral density of a cryogenically-cooled mid-infrared quantum cascade laser, we investigate the different contributions to the noise spectrum and identify the main differences with respect to standard bipolar semiconductor devices. In particular, the existence of a thermal cut-off on the 1/f noise allows to identify the current fluctuations through the heterostructure as the physical mechanism, intrinsic to the device, at the basis of the measured flicker noise. This result, marking the difference with bipolar semiconductor devices, is confirmed analyzing the laser frequency response to a modulation of the driving current.
引用
收藏
页码：984 / 988
页数：5
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