40–45-µm lasing of Fe:ZnSe below 180 K, a new mid-infrared laser material

Adams, John J.; Bibeau, C.; Page, Ralph H.; Krol, Denise M.; Furu, L. H.; Payne, Stephen A.

doi:10.1364/ol.24.001720

Cited by 222 publications

(117 citation statements)

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“…As in the isotope-ratio measurements (see Sect. 4.3), we implemented 6 Calculated spectra of methylamines (MMA, DMA and TMA) according to the PNNL database [58] at ppb concentrations, in presence of 3% H 2 O and 5% CO 2 [59]. In contrast to the near-IR region, no interferences are occurring as the inset indicates FIGURE 7 Wide scan of a mixture of 24 ppm DMA and 20 ppm TMA diluted in a nitrogen flow at 950 mbar total pressure with the cw-DFG system.…”

Section: Breath Analysismentioning

confidence: 99%

“…Solid state lasers with emissions exceeding 3 µm are rare. For example, a fiber-laser pumped Cr 2+ :ZnSe laser exhibits a broad tuning range from 2.2 to 3.1 µm [5] at a cw power of 1 W, or a Fe 2+ :ZnSe laser emitting between 3.9 and 4.5 µm [6] are mentioned here. While the first device operates at room temperature, the latter needs cryogenic cooling and only runs in pulsed mode.…”

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confidence: 99%

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Trace gas monitoring with infrared laser-based detection schemes

et al. 2007

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The success of laser-based trace gas sensing techniques crucially depends on the availability and performance of tunable laser sources combined with appropriate detection schemes. Besides near-infrared diode lasers, continuously tunable midinfrared quantum cascade lasers and nonlinear optical laser sources are preferentially employed today. Detection schemes are based on sensitive absorption measurements and comprise direct absorption in multi-pass cells as well as photoacoustic and cavity ringdown techniques in various configurations. We illustrate the performance of several systems implemented in our laboratory. These include time-resolved multicomponent traffic emission measurements with a mobile CO 2 -laser photoacoustic system, a diode-laser based cavity ringdown device for measurements of impurities in industrial process control, isotope ratio measurements with a difference frequency (DFG) laser source combined with balanced path length detection, detection of methylamines for breath analysis with both a near-IR diode laser and a DFG source, and finally, acetone measurements with a heatable multipass cell intended for vapor phase studies on doping agents in urine samples.PACS 33.20.Ea; 42.62.Fi; 42.72.Ai; 87.64.km; 92.60 Trace gases play a key role in various areas such as air pollution, climate research, industrial process control, agriculture, food industry, volcanology, workplace safety and medical diagnostics. There exist numerous gas sensing devices based on different detection principles like gas chromatography (GC), mass spectrometry (MS) or combinations of the two (GC-MS), chemiluminescence, Fourier transform infrared spectroscopy (FTIR), electrochemical sensors, colorimetry, etc. In recent years, laser-spectroscopic sensing devices have attracted a lot of interest (see e.g., [1]) as they enable high detection sensitivity (down to sub-ppb concentrations) and selectivity (including differentiation between isotopomers and isomers), multicomponent capabil- Trace gas sensor requirements with corresponding approach for laser-based detection system ity and large dynamic range (several orders of magnitude in concentration), and generally neither sample-preparation nor -preconcentration are required. However, the laser source characteristics in terms of available wavelengths, tunability, linewidth, power, operation temperature, etc., as well as the combination with appropriate sensitive detection schemes are crucial for the success of laser-based sensing. Table 1 lists the main sensing requirements and the corresponding approaches using laser-based methods. Ideally, one system can fulfill all requirements. The combination of broad continuous tuning with a narrow linewidth and a certain power level favors laserbased systems. Laser sourcesTunable near-infrared (near-IR) lasers are readily available, notably diode lasers equipped with an external cavity. These external cavity III-V diode lasers (ECDLs) represent excellent sources in terms of availability, compactness, robustness and tuning characteri...

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Section: Breath Analysismentioning

confidence: 99%

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confidence: 99%

Trace gas monitoring with infrared laser-based detection schemes

et al. 2007

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“…The efficient lasing was demonstrated on transitions in the ions of Cr 2+ :ZnS [1,2], Cr 2+ :ZnSe [1,2], Cr 2+ :CdSe [3], Cr 2+ :CdMnTe [4]. The lasing with ZnSe:Fe crystal grown by Bridgman method was also reported [5]. However the energy slope efficiency was only 8.2%.…”

mentioning

confidence: 84%

“…The uniformity of doped crystals was high enough. The concentration of doping impurity was determined from optical absorption measurements using the data on the absorption cross-section given in [1,5]. It changed twice at most along the crystal diameter of 40-50 mm and height of 7-15 mm.…”

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confidence: 99%

Vapour growth of II‐VI single crystals doped by transition metals for mid‐infrared lasers

Akimov

Фролов

Korostelin

et al. 2006

Phys. Status Solidi (c)

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A modified vapour phase contact‐free method to grow homogeneous single crystals of II‐VI compounds doped by transition metals is presented. Single crystals of ZnSe:Cr, ZnSe:Fe, ZnSe:Co, ZnSe:Ni, CdSe:Cr, ZnTe:Cr, ZnS:Fe and ZnS:Mn with doping level up to 1019 cm–3 have been grown. Efficient lasing at about 2.5 and 4 µm with ZnSe:Cr and ZnSe:Fe crystals respectively has been achieved. Dependence of Fe2+:ZnSe laser characteristics on temperature is presented in more detail. A possibility of using Cr2+:ZnSe laser in intracavity laser spectroscopy is demonstrated. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…Легирование ZnSe ионами переходных металлов (Cr, Fe, Co) открывает перспективу создания пе-рестраиваемых лазеров для спектрального диапазона 2-5 мкм. Создание таких лазеров особенно важно для разработки высокочувствительных методов спектрального анализа, поскольку в данной области длин волн лежат сильные линии поглощения многих молекул [6,7]. В основном используются легированные кристаллы, полученные либо из расплава, либо путем твердофазной диффузии атомов переходных ме-таллов через поверхность.…”

Section: Introductionunclassified

Properties and optical application of polycrystalline zinc selenide obtained by physical vapor deposition

Алексеевич¹,

Львовна²

2015

Naučno-teh. vestn. inf. tehnol. meh. opt.

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40–45-µm lasing of Fe:ZnSe below 180 K, a new mid-infrared laser material

Cited by 222 publications

References 9 publications

Trace gas monitoring with infrared laser-based detection schemes

Trace gas monitoring with infrared laser-based detection schemes

Vapour growth of II‐VI single crystals doped by transition metals for mid‐infrared lasers

Properties and optical application of polycrystalline zinc selenide obtained by physical vapor deposition

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