Theory of the intrinsic linewidth of quantum-cascade lasers: Hidden reason for the narrow linewidth and line-broadening by thermal photons M Yamanishi, T Edamura, K Fujita, N Akikusa, H Kan
IEEE Journal of Quantum Electronics 44 (1), 12-29, 2007
144 2007 Recent progress in terahertz difference-frequency quantum cascade laser sources K Fujita, S Jung, Y Jiang, JH Kim, A Nakanishi, A Ito, M Hitaka, T Edamura, ...
Nanophotonics 7 (11), 1795-1817, 2018
115 2018 High-performance, homogeneous broad-gain quantum cascade lasers based on dual-upper-state design K Fujita, T Edamura, S Furuta, M Yamanishi
Applied Physics Letters 96 (24), 2010
100 2010 Indirect pump scheme for quantum cascade lasers: dynamics of electron-transport and very high T0 -values M Yamanishi, K Fujita, T Edamura, H Kan
Optics express 16 (25), 20748-20758, 2008
85 2008 Terahertz generation in mid-infrared quantum cascade lasers with a dual-upper-state active region K Fujita, M Hitaka, A Ito, T Edamura, M Yamanishi, S Jung, MA Belkin
Applied Physics Letters 106 (25), 2015
72 2015 Sub-terahertz and terahertz generation in long-wavelength quantum cascade lasers K Fujita, S Hayashi, A Ito, M Hitaka, T Dougakiuchi
Nanophotonics 8 (12), 2235-2241, 2019
70 2019 Room temperature, continuous-wave operation of quantum cascade lasers with single phonon resonance-continuum depopulation structures grown by metal organic vapor-phase epitaxy K Fujita, S Furuta, A Sugiyama, T Ochiai, T Edamura, N Akikusa, ...
Applied Physics Letters 91 (14), 2007
64 2007 Broad-gain (Δλ/λ0 ~0.4), temperature-insensitive (T0 ~510K) quantum cascade lasers K Fujita, S Furuta, T Dougakiuchi, A Sugiyama, T Edamura, M Yamanishi
Optics express 19 (3), 2694-2701, 2011
63 2011 Ultra-broadband room-temperature terahertz quantum cascade laser sources based on difference frequency generation K Fujita, M Hitaka, A Ito, M Yamanishi, T Dougakiuchi, T Edamura
Optics express 24 (15), 16357-16365, 2016
61 2016 Extremely high T-values (∼ 450 K) of long-wavelength (∼ 15 μm), low-threshold-current-density quantum-cascade lasers based on the indirect pump scheme K Fujita, M Yamanishi, T Edamura, A Sugiyama, S Furuta
Applied Physics Letters 97 (20), 2010
60 2010 High-performance quantum cascade lasers with wide electroluminescence (∼ 600 cm− 1), operating in continuous-wave above 100° C K Fujita, S Furuta, A Sugiyama, T Ochiai, A Ito, T Dougakiuchi, T Edamura, ...
Applied physics letters 98 (23), 2011
47 2011 Spectral purity and tunability of terahertz quantum cascade laser sources based on intracavity difference-frequency generation L Consolino, S Jung, A Campa, M De Regis, S Pal, JH Kim, K Fujita, A Ito, ...
Science Advances 3 (9), e1603317, 2017
42 2017 High-Performance K Fujita, S Furuta, A Sugiyama, T Ochiai, T Edamura, N Akikusa, ...
IEEE Journal of Quantum Electronics 46 (5), 683-688, 2010
42 2010 High photoresponse in room temperature quantum cascade detector based on coupled quantum well design T Dougakiuchi, K Fujita, T Hirohata, A Ito, M Hitaka, T Edamura
Applied Physics Letters 109 (26), 2016
39 2016 Extremely temperature-insensitive continuous-wave quantum cascade lasers K Fujita, M Yamanishi, S Furuta, A Sugiyama, T Edamura
Applied Physics Letters 101 (18), 2012
37 2012 Indirectly pumped 3.7 THz InGaAs/InAlAs quantum-cascade lasers grown by metal-organic vapor-phase epitaxy K Fujita, M Yamanishi, S Furuta, K Tanaka, T Edamura, T Kubis, ...
Optics Express 20 (18), 20647-20658, 2012
36 2012 Terahertz imaging with room-temperature terahertz difference-frequency quantum-cascade laser sources A Nakanishi, K Fujita, K Horita, H Takahashi
Optics Express 27 (3), 1884-1893, 2019
35 2019 Broadband tuning of external cavity dual-upper-state quantum-cascade lasers in continuous wave operation T Dougakiuchi, K Fujita, N Akikusa, A Sugiyama, T Edamura, ...
Applied physics express 4 (10), 102101, 2011
34 2011 Mid-infrared InAs∕ AlGaSb superlattice quantum-cascade lasers K Ohtani, K Fujita, H Ohno
Applied Physics Letters 87 (21), 2005
28 2005 High-power low-divergence tapered quantum cascade lasers with plasmonic collimators R Blanchard, TS Mansuripur, B Gökden, N Yu, M Kats, P Genevet, K Fujita, ...
Applied Physics Letters 102 (19), 2013
27 2013 
Masamichi YamanishiHamamatsu PhotonicsEmail verificata su crl.hpk.co.jp
