Teradiode's high brightness semiconductor lasers

Huang, R.K.; Chann, Bien; Burgess, James D.; Lochman, Bryan; Zhou, Wang-Long; Cruz, Mike; Cook, Rob; Dugmore, Dan; Shattuck, Jeff; Tayebati, P.

doi:10.1117/12.2218168

Cited by 12 publications

(8 citation statements)

References 2 publications

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“…Фирмой Terra Diode продемонстрированы лазерные диодные системы со спектральным суммированием мощностью до 4,6 кВт [41], имеются сообщения о повышении мощности до 6 кВт.…”

Section: современные достижения в области формирования требуемых параunclassified

“…Применение таких решёток в схемах спектрального суммирования мощности ЛД, ЛЛД и матриц лазерных диодов позволило повысить яркость их излучения на два порядка и достичь уровня яркости твердотельных лазеров. Продемонстрированы полупроводниковые лазеры мощностью 4,5 и 6 кВт [41], показана принципиальная возможность масштабирования таких систем. Непосредственное использование излучения ЛД с применением объёмной дифракционной оптики имеет неплохие перспективы в обозримом будущем обеспечить максимально возможный полный к.п.д.…”

Section: заключениеunclassified

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PROSPECTS OF LASER DIODES APPLICATIONS TO INERTIAL CONFINEMENT FUSION (Review)

Bezotosnyĭ¹

2018

PAST-TF

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В статье дан анализ применения лазерных диодов (ЛД) и линеек лазерных диодов (ЛЛД) в действующих установках лазерного инерциального термоядерного синтеза (ИТС) и перспектив его расширения с учётом полученных в последние годы актуальных достижений в этой области. В частности, развитие научной, инженерной и технологической базы включает следующие направления: повышение мощности и яркости, сужение диаграммы направленности, сужение спектра излучения с использованием нового метода некогерентного спектрального суммирования, применимого как для одиночных лазерных диодов, так и для монолитных линеек, а также гибридных и монолитных двумерных матриц лазерных диодов. Обсуждается возможность применения в ИТС различных типов лазеров с диодной накачкой: волоконных лазеров, лазеров на парах щелочных металлов, твердотельных лазеров, в том числе на основе оптической керамики, а также непосредственно мощных лазерных диодных систем, построенных на принципах некогерентного суммирования. Ключевые слова: инерциальный термоядерный синтез, лазерные диоды, лазерные диодные линейки и матрицы лазерных диодов, лазерная диодная накачка.

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Section: современные достижения в области формирования требуемых параunclassified

Section: заключениеunclassified

PROSPECTS OF LASER DIODES APPLICATIONS TO INERTIAL CONFINEMENT FUSION (Review)

Bezotosnyĭ¹

2018

PAST-TF

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“…Since a key practical requirement of these systems is that multiple mid-IR laser beams must be combined into a single output without sacrificing beam quality, research to develop this challenging capability has received high priority in recent years. Currently, the state-of-the-art for combining multiple quantum cascade laser (QCL) beams relies on external optics to provide multiplexing [4][5][6][7]. It has long been recognized, however, that it will be highly beneficial from the perspectives of system compactness and expense if multiple beams, in some cases spanning multiple spectral bands, can be combined efficiently before they leave the semiconductor chip.…”

Section: Introductionmentioning

confidence: 99%

“…Several previous works have reported the use of Y-junctions to combine multiple QCL beams on the native indium phosphide (InP) substrate [8][9][10]. However, the Y-junction duplexer tree has inherently high loss [6], and integration on the native substrate precludes incorporating multiple gain materials on the same chip. One example of an integrated approach used an array of QCLs on InP coupled to an arrayed waveguide grating (AWG) on silicon germanium (SiGe) [7,11,12], though separate chips were necessary [13].…”

Section: Introductionmentioning

confidence: 99%

Multi-Spectral Quantum Cascade Lasers on Silicon With Integrated Multiplexers

et al. 2019

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Multi-spectral midwave-infrared (mid-IR) lasers are demonstrated by directly bonding quantum cascade epitaxial gain layers to silicon-on-insulator (SOI) waveguides with arrayed waveguide grating (AWG) multiplexers. Arrays of distributed feedback (DFB) and distributed Bragg-reflection (DBR) quantum cascade lasers (QCLs) emitting at ∼4.7 µm wavelength are coupled to AWGs on the same chip. Low-loss spectral beam combining allows for brightness scaling by coupling the light generated by multiple input QCLs into the fundamental mode of a single output waveguide. Promising results are demonstrated and further improvements are in progress. This device can lead to compact and sensitive chemical detection systems using absorption spectroscopy across a broad spectral range in the mid-IR as well as a high-brightness multi-spectral source for power scaling.

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“…An effective way to scale the output power and modify the brightness is wavelength beam combination (WBC), where output beams from many emitters in the diode laser bars are directed to the surface diffraction grating for operating as one emitter. TeraDiode reported 4 kW output power from an optical fiber with 100 μm core diameter and 0.08 numerical aperture (NA) [6]. Additionally, dense spectral combination (DSC) based on the volume Bragg gratings (VBGs), as an alternative method of WBC, has been investigated because it can combine the arbitrary number of beamlets.…”

Section: Introductionmentioning

confidence: 99%

Development and Thermal Management of kW-Class High-Power Diode Laser Source Based on the Structure of Two-Stage Combination

et al. 2019

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In this paper, we present an optical structure for two-stage beam combination to realize a high-power fiber-coupled diode laser source. In the first stage, dense spectral combination based on reflecting volume Bragg gratings is implemented for combining five diode laser blocks with a spectral separation of 1.5 nm, to a high output power submodule. In the second stage, submodules are further coaxially multiplexed by polarization beam combination and coarse spectral combination to obtain a higher output power. In the process of the beam combination, thermal effects of combining elements are also investigated. By using a temperature control, the diode laser source can steadily produce 3120-W power from an optical fiber with 105-μm core diameter and 0.2 numerical aperture. This paper demonstrates the benefits of this combination structure and the effectiveness of the temperature control.

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Teradiode's high brightness semiconductor lasers

Cited by 12 publications

References 2 publications

PROSPECTS OF LASER DIODES APPLICATIONS TO INERTIAL CONFINEMENT FUSION (Review)

PROSPECTS OF LASER DIODES APPLICATIONS TO INERTIAL CONFINEMENT FUSION (Review)

Multi-Spectral Quantum Cascade Lasers on Silicon With Integrated Multiplexers

Development and Thermal Management of kW-Class High-Power Diode Laser Source Based on the Structure of Two-Stage Combination

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