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Baryshev A.; Hovenier J.N.; Adam A.J.L.; Kašalynas I.; Gao J.R.; Klaassen T.O.; Williams B.S.; Kumar S.; Hu Q.; Reno J.L. |
| Title |
Phase locking and spectral linewidth of a two-mode terahertz quantum cascade laser |
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Journal Article |
| Year |
2006 |
Publication |
Physics Letters |
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89 |
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We have studied the phase locking and spectral linewidth of an ~ 2.7 THz quantum cascade laser by mixing its two lateral lasing modes. The beat signal at about 8 GHz is compared with a microwave eference by applying conventional phase lock loop circuitry with feedback to the laser bias current. Phase locking has been demonstrated, resulting in a narrow beat linewidth of less than 10 Hz. Under requency stabilization we find that the terahertz line profile is essentially Lorentzian with a minimum linewidth of ~ 6.3 kHz. Power dependent measurements suggest that this linewidth does not approach the Schawlow-Townes limit. |
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RPLAB @ atomics90 @ |
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967 |
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Hocker, L. O.; Sokoloff, D. R.; Daneu, V.; Szoke, A.; Javan, A. |
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Frequency mixing in the infrared and far-infrared using a metal-to-metal point contact diode |
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Journal Article |
| Year |
1968 |
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Applied Physics Letters |
Abbreviated Journal |
Appl Phys Lett |
| Volume |
12 |
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12 |
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optical antennas |
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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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Hadfield, Robert. H.; Habif, Jonathan L.; Schlafer, John; Schwall, Robert. E.; Nam, Sae Woo |
| Title |
Quantum key distribution at 1550 nm with twin superconducting single-photon detectors |
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Journal Article |
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2006 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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89 |
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24 |
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241129 |
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SSPD, quantum cryptography |
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0003-6951 |
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533 |
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Karasik, B. S.; Elantiev, A. I. |
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Noise temperature limit of a superconducting hot-electron bolometer mixer |
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1996 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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68 |
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6 |
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853-855 |
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HEB mixer noise temperature, Johnson noise, thermal fluctuation noise, noise bandwidth |
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260 |
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Karasik, B. S.; Il'in, K. S.; Pechen, E. V.; Krasnosvobodtsev, S. I. |
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Diffusion cooling mechanism in a hot-electron NbC microbolometer mixer |
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Journal Article |
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1996 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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68 |
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16 |
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2285-2287 |
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HEB mixer, diffusion cooling channel, diffusion channel |
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0003-6951 |
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