Growth and characterization of materials for tunable lasers in the near infared spectral region

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Published by National Aeronautics and Space Administration in [Washington, DC .

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  • Tunable lasers.

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SeriesNASA-CR -- 185832., NASA contractor report -- NASA CR-185832.
ContributionsUnited States. National Aeronautics and Space Administration.
The Physical Object
Pagination1 v.
ID Numbers
Open LibraryOL15280649M

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GROWTH AND CHARACTERIZATION OF MATERIALS FOR TUNABLE LASERS IN THE NEAR INFRARED SPECTRAL REGION Principal Investigators Richard C. Powell and Joel J. Martin Department o_ Physics Oklahoma State University Stillwater, OK NASA Research Grant NAG-I Semi-annual Progress Report 1 February - 31 July (_ASA-Ca- )   Laser spectroscopy, crystal growth, and radiation damage research was performed.

The laser spectroscopy effort focused on understanding the effects of excited state absorption processes involving pump photons. This was performed on a variety of rare earth ions in different hosts.

The crystal growth and radiation damage effort focused on LiFY4 (YLF) doped with rare earth :// During this reporting period, work proceeded in two directions. The first was the development of crystal growth procedures for rare earth doped LiYF4 crystals. The procedures for growth and pre-growth treatment of starting materials for undoped LiYF4 crystals were established and good optical quality materials were grown.

A significant amount of time was spent trying to establish the optimum This banner text can have markup. web; books; video; audio; software; images; Toggle Get this from a library.

Growth and characterization of materials for tunable lasers in the near infrared spectral region. [Richard C Powell; Joel J Martin; United Get this from a library. Growth and characterization of tunable solid state lasers in the near infrared spectral region: final report on NASA grant NAG [Richard C Powell; Joel J Martin; United States.

National Aeronautics and Space Administration.]   Modern optical materials may be designed to have unique spectral, directional and polarimetric optical properties.

We have developed a unique, spectrally tunable, fully Stokes-polarimetric scatterometry system in the infrared (IR) specifically for the characterization of nanostructured optical materials ?article=&context=facpub. Technical Report: Development of tunable semiconductor lasers for application to air pollution measurements.

Final report The absorption spectroscopy of X-rays (XAS) is an interesting alternative technique to analyze the local structure, particularly in noncrystalline materials [67,2,23,24].It is a combination of photoemission and scattering of the photoelectron by the surrounding atoms.

This X-ray technique has been developed almost exclusively on :// Only a few types of doped insulator solid-state lasers emit in the mid-infrared spectral region. Some examples are: Cr 2+:ZnSe (chromium-doped zinc selenide) lasers (and some lasers with similar materials) can emit up to roughly are broadly tunable and can easily produce hundreds of milliwatts of output power.

Fe 2+:ZnSe lasers can emit at – :// Abstract. This chapter focuses on the growth, characterization, and applications of self-assembled In x Ga 1-x As quantum dots (QDs) on GaAs substrates.

These QDs are formed by the so-called Stranski-Krastanow (SK) transition of the highly lattice-mismatched In x Ga 1-x As film. The In x Ga 1-x As/GaAs system is the prototypical system in III–V growth for self-assembly of QDs, and J.M.

Chalmers, in Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, Abstract. Mid-infrared spectroscopy is a very important and widely used sample characterisation and analytical technique, whether the sample is in the form of a gas, a liquid, paste-like, or :// The quantum cascade lasers: the semiconductor solution for lasers in the µm wavelength region Carlo Sirtori, Xavier Marcadet, Michel Garcia, Alexei Baranov, Roland Teissier, Davide Barate, Aurore Vicet, Claude Alibert, John Cockburn, Dmitri Revin   A novel light source for the near-infrared region which has the highest intensity and widest spectral bandwidth of all near-IR light sources has been developed.

The system is based on a single-mode fiber (about 18 m long) doped with Er3+ ion. The doped ion produces amplified spontaneous emission (ASE) in the near-IR region (from to nm) when it is excited by a diode laser at   Three growth temperatures were therefore comprehensibly investigated in Ref.

for the in-situ B-doping of Ge:and °C using reduced-pressure chemical vapor deposition (RP-CVD). Molecular beam epitaxy (MBE) requires ultra-high vacuum, presents a very control deposition rate and is usually used in academic :// In the second case, strong mid-infrared emission of QDs at room temperature has been obtained that is tunable over a wide spectral region.

The main application of IV–VI or lead salt compounds is in mid-infrared optoelectronic devices, and examples for diode lasers, vertical cavity surface-emitting laser, and microdisc lasers are ://   A family of halide perovskite compounds has a general crystal structure and chemical formula of ABX 3 (), where A is a Cs +, CH 3 NH 3 +, or HC (NH 2) 2 + organic or inorganic cation; B is a Sn 2+ or Pb 2+ metal ion; and X − is a halide anion (X = I, Br, Cl, or mixed Br/I and Cl/Br).

As an emerging class of direct band-gap semiconductor, trihalide perovskite materials exhibits excellent   Chapter 15 considers twelve well-known dye lasers and solid-state lasers, including both dielectric solid-state lasers and semiconductor lasers.

The book concludes with Section Six (Chapter 16), which provides a brief overview of frequency muliplication with lasers and other nonlinear  › 百度文库 › 行业资料. Several iron doped materials (for example Fe:CdMnTe [4]) are promising candidates for room-temperature (RT) lasers with tunability up to 6 m, however these crystals require m pump source Growth and characterization of LiYF4: Er+3 fibers micro lasers and laser modulators.

The book is suitable for specialists and students in the fields of materials science, crystal growth Summary: After about 16 years of exploration and development, interband cascade (IC) lasers have now been proven to be capable of continuous wave (cw) operation at room temperature and above for a wide wavelength range of to μm in the mid-infrared spectral region.

In contrast to quantum cascade (QC) lasers based on intersubband ?. Ring-Resonator Based Widely-Tunable Narrow-Linewidth Si/InP Integrated Lasers Article (PDF Available) in IEEE Journal of Selected Topics in Quantum Electronics PP(99) August with Reads    Near-infrared devices Mid-infrared devices Toward terahertz Conclusion Resonant Tunneling Diodes Introduction Device design Material growth Device fabrication Electrical characterization Summary Conclusions References.

III LASERS. Advances in High-Power Quantum Cascade Lasers   Layered 2D materials with extraordinary optical properties play important roles in the development of ultrafast photonics, in which mode-locking lasers with a high fundamental repetition rate (>1 GHz) are of particular interest.

17 :// Morrissey, PE and Cotter, W and O'Callaghan, J and Yang, H and Roycroft, B and Goulding, D and Corbett, B and Peters, Frank H () Multiple coherent outputs from single growth monolithically integrated injection locked tunable lasers Indium Phosphide and Related Materials (IPRM), International Conference on, Dr.

Shamsul Arafin is currently working as an Assistant Professor in the Electrical and Computer Engineering Department at The Ohio State University. Prior to joining OSU, he worked as a Project   Ultralow noise, yet tunable lasers are a revolutionary tool in precision spectroscopy, displacement measurements at the standard quantum limit, Journal Article: High efficiency cw laser-pumped tunable alexandrite laser   Abstract Lasers provide the ability to accurately deliver large amounts of energy into confined regions of a material in order to achieve a desired response.

For opaque materials, this energy is absorbed near the surface, modifying surface chem-istry, crystal structure, and/or multiscale morphologywithout altering the bulk.

This By exploiting such unique diameter‐dependent emission region formation, tunable emission across wide spectral ranges can be achieved in a single MBE process step. Red, orange, green, and blue InGaN/GaN nanowire LEDs are formed simultaneously on the same chip, with representative current‐voltage curves and strong visible light :// Proc.

SPIE.Operational Characteristics and Crystal Growth of Nonlinear Optical Materials II Proc. SPIEQuantum Dots and Nanostructures: Growth, Characterization, and Modeling XV, (14 March ); doi: / New superbroadband dye and solid state lasers with several independently tunable lasing lines Alexandre M.

Izmailov, Andrey G. Zhiglinskiy Proc. SPIEGrowth, Characterization, and Applications of Laser Host and Nonlinear Crystals II, pg (21 July ); doi: /   Get this from a library. Growth and characterization of materials for tunable lasers in the near infrared spectral region: semi-annual progress report, 1 February July [Richard C Powell; Joel J Martin; United States.

National Aeronautics and Space Administration.] KEYWORDS: Switches, Cadmium, Sensors, Crystals, Zinc, Power supplies, Sensor performance, Raw materials, Semiconducting wafers, Tellurium Read Abstract + Results will be presented for the growth of CdZnTe by the low pressure Bridgman growth :// @article{osti_, title = {Bridgman growth of large-aperture yttrium calcium oxyborate crystal}, author = {Wu, Anhua and Jiang, Linwen and Qian, Guoxing and Zheng, Yanqing and Xu, Jun and Shi, Erwei}, abstractNote = {Highlights: YCOB is a novel non-linear optical crystal possessing good thermal, mechanical and nonlinear optical properties.

Large size crystal growth is key technology The reflectivity of optical fibers coated with graphene oxide layers is investigated for the telecom region allowing to both monitor layer growth kinetics and cavity characterization. Tunable reflective surfaces are successfully attained in both cleaved optical fibers and hollow microsphere fiber-based sensors by simply coating them with PEI/GO Seidel M.

() From the Near- to the Mid-Infrared. In: A New Generation of High-Power, Waveform Controlled, Few-Cycle Light Sources. Springer Theses (Recognizing Outstanding Ph.D. Research). The emission wavelength of a laser diode is essentially determined by the band gap of the laser-active semiconductor material: the photon energy is close to the band gap quantum well lasers, there is also some influence of the quantum well thickness.

A variety of semiconductor materials makes it possible to cover wide spectral ://   [10]Yang S, Kiraly B, Wang W Y, et al. Fabrication and characterization of beaded SiC quantum rings with anomalous red spectral shift[J].

Advanced Materials,24(41): [11] Zhang J., Liu X., Wu S., Cao Bingqiang. One-pot synthesis of. About AIP Publishing. AIP Publishing is a wholly owned not-for-profit subsidiary of the American Institute of Physics (AIP). Our portfolio comprises highly regarded, peer-reviewed journals, including a growing portfolio of Open Access titles, that cover all areas of the physical ://Fiber Lasers and Glass Photonics: Materials through Applications II Monday - Friday 6 - 10 April Brillouin light scattering characterization of optical materials Paper Author(s): Patrice Salzenstein, Institut Franche-Comte Electronique Mecanique Thermique et Optique, CNRS (France) Tunable fiber laser concepts in the 2µm   Patterning of nanostructures with sub nm periodicities over cm2-scale areas is challenging using standard approaches.

This paper demonstrates a scalable technique for feature-density doubling that can generate nanopatterned lines with periodicities down to nm covering >3 cm2. We developed a process based on controlled wet overetching of atomic-layer deposited alumina to tune

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