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| Author |
Sekine, Norihiko; Hosako, Iwao |
Title  |
Intensity modulation of terahertz quantum cascade lasers under external light injection |
Type |
Journal Article |
| Year |
2009 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
95 |
Issue |
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Pages |
201106(1-3) |
| Keywords |
QCL modulation, THz, terahertz |
| Abstract |
We investigated the light-current characteristics of terahertz (THz) quantum cascade lasers under external light injection, which excites interband transitions in the active materials. It was found that the amount of reduction in the THz power was constant for all injection currents above threshold, and the dependence of the reduction amount on the wavelength of the external light was observed to show a resonancelike feature. The dominant intensity modulation mechanism was found to be the loss change caused by interband transitions in the active region. Further, the effective coupling efficiency plays an important role in the intensity modulation. |
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630 |
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| Author |
An, Zhenghua; Chen, Jeng-Chung; Ueda, T.; Komiyama, S.; Hirakawa, K. |
| Title |
Infrared phototransistor using capacitively coupled two-dimensional electron gas layers |
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Journal Article |
| Year |
2005 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
86 |
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Pages |
172106 - 172106-3 |
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2DEG |
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RPLAB @ akorneev @ |
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603 |
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| Author |
Zwiller, V.; Aichele, T.; Seifert, W.; Persson, J.; Benson, O. |
| Title |
Generating visible single photons on demand with single InP quantum dots |
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Journal Article |
| Year |
2003 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
82 |
Issue |
10 |
Pages |
1509-1511 |
| Keywords |
single photon, quantum dot, InP |
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0003-6951 |
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503 |
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Hocker, L. O.; Sokoloff, D. R.; Daneu, V.; Szoke, A.; Javan, A. |
| Title |
Frequency mixing in the infrared and far-infrared using a metal-to-metal point contact diode |
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Journal Article |
| Year |
1968 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl Phys Lett |
| Volume |
12 |
Issue |
12 |
Pages |
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optical antennas |
| Abstract |
Metalâ€toâ€metal point contact diodes were used to obtain the 54â€GHz beat notes between two adjacent 10.6â€μ CO2 laser transitions. The speed of the diodes in the farâ€infrared is at least 1000 GHz. This was tested with a 337â€μ HCN laser. |
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RPLAB @ gujma @ |
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742 |
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Stevens, M.; Hadfield, R.; Schwall, R.; Nam, S.W.; Mirin, R.; Gupta, J. |
| Title |
Fast lifetime measurements of infrared emitters using a low-jitter superconduct- ing single-photon detector |
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Journal Article |
| Year |
2006 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
89 |
Issue |
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Pages |
031109 |
| Keywords |
SSPD, jitter, QD, QW |
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RPLAB @ akorneev @ |
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611 |
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