Results 1 to 10 of about 7,510 (153)

The Story of Elaeagia Resin (Mopa-Mopa), So Far

open access: yesHeritage, 2023
The unusual resin from some species of Elaeagia, a genus now found in certain parts of Central America and South America, was probably first utilized by native peoples in Colombia more than a thousand years ago. It became a crucial part of often elaborately decorated objects made in the southwestern city of Pasto in the colonial period, and it has ...
Richard Newman   +2 more
exaly   +3 more sources

Using Plantain Rachis Fibers and Mopa-Mopa Resin to Develop a Fully Biobased Composite Material. [PDF]

open access: yesPolymers (Basel)
A completely biobased composite material was developed using a matrix of natural resin extracted from the Elaegia pastoensis Mora plant, commonly known as Mopa-Mopa or “Barniz de Pasto”, reinforced with fibers extracted from plantain rachis agricultural residues.
Sánchez Morales V   +8 more
europepmc   +3 more sources

Beyond Barniz de Pasto Mopa-Mopa Objects: Artisans and Harvesters in the 21st Century

open access: yesHeritage
This article intends to highlight and reconstruct the relationships between humans (harvesters, woodworkers and master artisans) and non-humans (raw materials, tools, places, products, etc.) in the Barniz de Pasto mopa-mopa tradition. These relationships were lost when the focus came to be primarily on the objects, as happens in most popular art forms ...
Giovany Paolo Arteaga Montes   +1 more
exaly   +3 more sources

Valoración del patrimonio cultural asociado con el Barniz de Pasto Mopa-Mopa [PDF]

open access: yesEncuentros de Investigación Formativa RAD, 2019
El artículo presenta los resultados de investigación sobre la valoración del Patrimonio Cultural asociado con el Barniz de Pasto (Mopa-Mopa), a partir de testimonios escritos y visuales obtenidos de manera participativa. La investigación fue de orden cualitativo, con un tipo diagnóstico–propositivo de corte etnográfico.
Mina, Jose Herminsul   +2 more
  +10 more sources

2-kW Average Power CW Phase-Conjugate Solid-State Laser [PDF]

open access: yes, 2007
We have demonstrated stable operation of a 2-kW Yb:YAG phase-conjugate master oscillator power amplifier (PC-MOPA) laser system with a loop phase-conjugate mirror (LPCM). This is the first demonstration of a continuous wave (CW)-input LPCM MOPA operating
Baltimore, Robert S.   +8 more
core   +1 more source

Studies of a Terawatt X-Ray Free-Electron Laser [PDF]

open access: yes, 2018
The possibility of constructing terawatt (TW) x-ray free-electron lasers (FELs) has been discussed using novel superconducting helical undulators [5].
Freund, H. P., van der SLot, P. J. M.
core   +4 more sources

Spatial and temporal filtering of a 10-W Nd:YAG laser with a Fabry-Perot ring-cavity premode cleaner [PDF]

open access: yes, 1998
We report on the use of a fixed-spacer Fabry–Perot ring cavity to filter spatially and temporally a 10-W laser-diode-pumped Nd:YAG master-oscillator power amplifier.
Byer, R. L.   +6 more
core   +1 more source

Femtosecond pulses at 50-W average power from an Yb:YAG planar waveguide amplifier seeded by an Yb:KYW oscillator [PDF]

open access: yes, 2012
We report the demonstration of a high-power single-side-pumped Yb:YAG planar waveguide amplifier seeded by an Yb:KYW femtosecond laser. Five passes through the amplifier yielded 700-fs pulses with average powers of 50 W at 1030 nm. A numerical simulation
Baker, Howard John   +5 more
core   +1 more source

75%-efficiency blue generation from an intracavity PPKTP frequency doubler [PDF]

open access: yes, 2004
We report on a high-efficiency 461 nm blue light conversion from an external cavity-enhanced second-harmonic generation of a 922 nm diode laser with a quasi-phase-matched KTP crystal (PPKTP).
Arie   +36 more
core   +3 more sources

Coherent power combination of two Master-oscillator-power-amplifier (MOPA) semiconductor lasers using optical phase lock loops [PDF]

open access: yes, 2007
Using heterodyne Optical Phase-Locked Loops (OPLLs), two 1W high power 1550 nm master-oscillator-power-amplifier (MOPA) semiconductor lasers operating as current controlled oscillators are phase-locked to a 1 mW reference laser.
Aflatouni, Firooz   +7 more
core   +1 more source

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