2016
DOI: 10.1063/1.4943087
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Long wavelength stimulated emission up to 9.5 μm from HgCdTe quantum well heterostructures

Abstract: Stimulated emission from waveguide HgCdTe structures with several quantum wells inside waveguide core is demonstrated at wavelengths up to 9.5 μm. Photoluminescence line narrowing down to kT energy, as well as superlinear rise in its intensity evidence the onset of the stimulated emission, which takes place under optical pumping with intensity as small as ∼0.1 kW/cm2 at 18 K and 1 kW/cm2 at 80 K. One can conclude that HgCdTe structures potential for long-wavelength lasers is not exhausted.

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Cited by 44 publications
(34 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: 93%
“…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: 93%
“…(i) титан-сапфировый лазер " Tsunami" (длина волны 0.9 мкм, средняя мощность 400 мВт). Этот источник использовался при измерениях ФЛ с помощью модуляционной методики, описанной в работах [11,20]; XXII Международный симпозиум " Нанофизика и наноэлектроника" 1265 (ii) лазерный комплекс Solar OPO с возможностью генерации излучения с длинами волн 1.94−2.3 мкм (блок КТР ОРО, энергия в импульсе до 5 мДж), длительностью импульса 10 нс и частотой повторения 10 Гц (за деталями эксперимента можно обратиться к работе [21]);…”
Section: методика экспериментаunclassified
“…За деталя-ми эксперимента можно обратиться к работам [28,29]. Для накачки использовался Nd : YAG лазер, сопряжен-ный с параметрическим генератором света фирмы Solar (Минск, Беларусь).…”
Section: методика экспериментаunclassified