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Hovenier J.N.; Adam A.J.L.; Kašalynas I.; Gao J.R.; Klaassen T.O.; Baryshev A.; Williams B.S.; Kumar S.; Hu Q.; Reno J.L. |
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Phase-locking on the beat signal of a two-mode 2.7 terahertz metal-metal quantum cascade laser |
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2006 |
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Proc. Symp. IEEE/LEOS Benelux Chapter |
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125-128 |
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We have studied the linewidth and phase-locking of a 2.7 THz quantum cascade laser by using a superconducting bolometer mixer. The 8 GHz beat signal is compared with a microwave reference with a feedback to the laser bias current. Phase locking has been demonstrated, resulting in an extremely narrow beat linewidth of less than 10 Hz. Under frequency-stabilization conditions we find that the line profile is virtually Lorentzian with a long-term minimum linewidth of the THz modes of about 6.3 kHz. Temperature dependent measurements suggestthat this linewidthdoes not approach the Schawlow-Townes limit. |
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RPLAB @ atomics90 @ |
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968 |
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de Graauw, Thijs; Whyborn, Nick; Caux, Emmanuel; Phillips, Tom; Stutzki, Juergen; Tielens, Xander; Güsten, Rolf; Helmich, Frank; Luinge, W.; Pearson, John; Roelfsema, Peter; Schieder, Rudolf; Wildeman, Klaas; Wafelbakker, Kees |
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The Herschel-heterodyne instrument for the far-infrared (HIFI) |
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2006 |
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Proc. SPIE |
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421 |
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David Olaya; Jian Wei; Sergei Pereverzev; Karasik, Boris S.; Kawamura, Jonat.han H.; McGrath, William R.; Sergeyev, Andrei V.; Gershenson, Michael E. |
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An ultrasensitive hot-electron bolometer for low-background SMM applications |
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2006 |
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Proc. SPIE |
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6275 |
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627506 |
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RPLAB @ s @ qoheb_det_SPIE_Olaya_2006 |
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387 |
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Piotr슠Orleanski; Miroslaw슠Ciechanowicz; Malgorzata슠Michalska; Witold슠Nowosielski; Miroslaw슠Rataj; Marek슠Winkler |
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LCU: the control unit dedicated for local oscillator subsystem in ESA HIFI/Herschel project |
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2006 |
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Proc. SPIE |
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6159 |
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RPLAB @ s @ LO_control_HIFI_Heschel_2006 |
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391 |
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Karpov, A.; Miller, D.; Rice, F.; Stern, J. A.; Bumble, B.; LeDuc, H. G.; Zmuidzinas, J. |
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Development of 1.25 THz SIS mixer for Herschel Space Observatory |
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2006 |
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Proc. SPIE |
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6275 |
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62751 |
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Zmuidzinas, Jonas; Holland, Wayne S. |
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RPLAB @ s @ Karpov_SIS_2006 |
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401 |
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