2017
DOI: 10.1063/1.4996966
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Stimulated emission from HgCdTe quantum well heterostructures at wavelengths up to 19.5 μm

Abstract: We report on stimulated emission at wavelengths up to 19.5 μm from HgTe/HgCdTe quantum well heterostructures with wide-gap HgCdTe dielectric waveguide, grown by molecular beam epitaxy on GaAs(013) substrates. The mitigation of Auger processes in structures under study is exemplified, and the promising routes towards the 20–50 μm wavelength range, where HgCdTe lasers may be competitive to the prominent emitters, are discussed.

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Cited by 80 publications
(80 citation statements)
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“…A quasi-relativistic electron-hole dispersion is realized therein as a result of hybridization between topological states at two adjacent CdyHg1−yTe/HgTe interfaces. 22 We argue that Auger suppression due to "diracness" of electron-hole bands has driven the recently achieved long-wavelength (up to λ ∼ 20 µm) stimulated emission in narrow QWs, [23][24][25] and the lasing wavelength can further reach up to ∼ 50 µm at liquid nitrogen temperature. This possibility was overlooked during half-a-century history of CdHgTe photonics, as most laser studies focused either on wide wells 26,27 or wells with large Cd fraction.…”
mentioning
confidence: 95%
“…A quasi-relativistic electron-hole dispersion is realized therein as a result of hybridization between topological states at two adjacent CdyHg1−yTe/HgTe interfaces. 22 We argue that Auger suppression due to "diracness" of electron-hole bands has driven the recently achieved long-wavelength (up to λ ∼ 20 µm) stimulated emission in narrow QWs, [23][24][25] and the lasing wavelength can further reach up to ∼ 50 µm at liquid nitrogen temperature. This possibility was overlooked during half-a-century history of CdHgTe photonics, as most laser studies focused either on wide wells 26,27 or wells with large Cd fraction.…”
mentioning
confidence: 95%
“…trigonal warping) or due to many body effects such as plasmonassisted processes or additional scattering by an impurity or phonon [32][33][34][35][36][37]. A suppression of the Auger recombination has also been addressed for HgTe-based QW structures with symmetric dispersion laws in conduction and valence bands [38]. This suppression has been used to obtain band-band population inversion and stimulated THz emission, which, because of the efficient nonradiative Auger recombination, can not be achieved in conventional narrow band semiconductors.…”
Section: Introductionmentioning
confidence: 99%
“…включением" оже-рекомбинации вследствие роста температуры горячих носителей (см. [15]). В то же время для структуры 1, рассчитанной на длины волн около 20 мкм, гашение наступает практически сразу после преодоления порога возникновения СИ.…”
Section: результаты и обсуждениеunclassified
“…Переход к накачке с длиной волны 10.6 мкм резко уменьшает разогрев носителей, и интегральная интенсивность СИ монотонно растет с увеличением мощности накачки. Таким образом, эффект гашения СИ с ростом накачки, наблюдавшийся в [15], не является фундаментальным, а обусловлен использованием коротковолновой накачки.…”
Section: результаты и обсуждениеunclassified
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