Short wavelength (λ∼3.4 μm) quantum cascade laser based on strained compensated InGaAs/AlInAs

Faist, Jérôme; Capasso, Federico; Sivco, Deborah L.; Hutchinson, Albert L.; Chu, Sung‐Nee G.; Cho, Alfred Y.

doi:10.1063/1.120843

Cited by 295 publications

(112 citation statements)

References 15 publications

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“…Reaching wavelengths below 4 μm has proven to be very challenging. [31][32][33][34][35][36] However this situation may soon change, for research in this field is active in several groups. [33][34][35][37][38][39][40][41][42] In the most widely used AlInAs/GaInAs material system, a short-wavelength midinfrared QCL, emitting pulsed at 3.5 μm (at 280 K), was demonstrated using straincompensated AlInAs/GaInAs on InP substrates.…”

Section: Short-wavelength Mid-ir Qclsmentioning

confidence: 99%

High-performance midinfrared quantum cascade lasers

Capasso

2010

Opt. Eng

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184

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Abstract. The design and operating principles of quantum cascade lasers (QCLs) are reviewed along with recent developments in high-power cw and broadband devices. Cw power levels of several watts at room temperature have been achieved at 4.6-μm wavelength; broadband single-mode tuning (≈400 cm −1 ) has been achieved using an external-cavity QCL with a grating as a tuning element. An alternative approach, consisting of a monolithically integrated array of single-mode QCLs individually currentdriven by a microcontroller, has led to broadband single-mode tuning over a range of 200 cm −1 without requiring the use of moving parts. This spectrometer on a chip holds promise for high-brightness compact tracegas sensors capable of operating in harsh environments. C 2010 Society of Photo-Optical Instrumentation Engineers.

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Section: Short-wavelength Mid-ir Qclsmentioning

confidence: 99%

High-performance midinfrared quantum cascade lasers

Capasso

2010

Opt. Eng

Self Cite

184

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“…The basic cell is repeated for 30 to 40 periods in order to enhance the output power. Until recently quantum cascade lasers could be built only to operate in the range of 5-20 µm, with output power of the order of few mW, under CW conditions (at least of to 200 K) or under pulsed condition up to room temperature and higher [24][25][26][27].…”

Section: Thz Power Generation With Quantum Cascade Lasersmentioning

confidence: 99%

Optical far-IR wave generation - state-of-the-art and advanced device structures

Krozer¹,

Leone

Roskos

et al. 2004

SPIE Proceedings

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A recent study initiated by the European Space Agency aimed at identifying the most promising technologies to significantly improve on the generation of coherent electromagnetic radiation in the THz regime. The desired improvements include, amongst others, higher output powers and efficiencies at increasingly higher frequencies, wider tunability and miniaturization. The baseline technologies considered revolve around Photomixing and novel laser based technologies compared to all electronic techniques. Some of the most significant findings will be presented together with technological developments and experimental results selected for medium to short term development. These technologies include advanced p-i-n photomixer with superlattice structures and, THz quantum cascade lasers. Recent results achieved in these fields will be put into the potential perspective for the respective technology in the future.

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“…A new class of semiconductor lasers-quantum cascade (QC) lasers [1]-has become a promising alternative to conventional diode lasers in the mid-infrared with pulsed operation above room temperature between 3.4 to 16 mm [2,3]. However, continuous wave (CW) operation of QC lasers has remained limited to cryogenic temperatures below 210 K [4] imposing a strong technological limitation for all applications that require narrow linewidths and/or high-frequency modulation.…”

Section: Introductionmentioning

confidence: 99%

Continuous wave operation of quantum cascade lasers

Beck

Hofstetter

Aellen

et al. 2003

Journal of Crystal Growth

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Continuous wave (CW) operation of quantum cascade lasers is reported up to temperatures of 312 K. The devices were fabricated as buried heterostructure lasers and episide-down mounted for improved heat dissipation. Fabry-Perot lasers emitted 17 mW of continuous optical power at 292 K and still 3 mW at 311 K at l ¼ 9:12 mm. Distributed feedback quantum cascade lasers showed CW single-mode operation up to 260 K at l ¼ 9:0 mm with a side mode suppression rate better than 30 dB.

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Short wavelength (λ∼3.4 μm) quantum cascade laser based on strained compensated InGaAs/AlInAs

Cited by 295 publications

References 15 publications

High-performance midinfrared quantum cascade lasers

High-performance midinfrared quantum cascade lasers

Optical far-IR wave generation - state-of-the-art and advanced device structures

Continuous wave operation of quantum cascade lasers

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