Results 21 to 30 of about 260,156 (297)

Selectable Dual-Wavelength Actively Q-Switched Laser by Monolithic Electro-Optic Periodically Poled Lithium Niobate Bragg Modulator

open access: yesIEEE Photonics Journal, 2013
A novel dual-wavelength actively Q-switched laser by a cascaded electrooptic periodically poled lithium niobate (PPLN) Bragg modulator has been developed. Two PPLN Bragg modulators with grating period Λ1 = 20.3 (EPBM1) and Λ2 = 25.7 μ
Shou-Tai Lin   +3 more
doaj   +1 more source

Laser diode pumped Nd:YVO4 laser.

open access: yesThe Review of Laser Engineering, 1990
Having a larger stimulated emission cross section and stronger fluorescence emission, a laserdiode (LD) pumped Nd: YVO4 laser has higher efficiency and power than Nd: YAG laser.Spectral property and CW end-pumped lasing characteristics have been measured on thismaterial.
Hirokazu NAGAMOTO   +9 more
openaire   +2 more sources

Cryogenic cooling for high power laser amplifiers

open access: yesEPJ Web of Conferences, 2013
Using DPSSL (Diode Pumped Solid State Lasers) as pumping technology, PW-class lasers with enhanced repetition rates are developed. Each of the Yb YAG amplifiers will be diode-pumped at a wavelength of 940 nm.
Perin J.P., Millet F., Divoky M., Rus B.
doaj   +1 more source

880-nm-Diode-Laser-End-Pumped Electrooptically Q-Switched Nd:YLF Laser With High Energy and Good Beam Quality at 1047 nm and 1 kHz

open access: yesIEEE Photonics Journal, 2016
An electrooptically Q-switched Nd:YLF laser end-pumped by an 880-nm laser diode with high energy and short pulsewidth at 1 kHz is demonstrated. The asymmetry of the focal lengths of thermal lens along the $a$-axis and $c$-axis is observed, and the ...
Zilong Zhang   +4 more
doaj   +1 more source

Charge and exciton dynamics of OLEDs under high voltage nanosecond pulse: towards injection lasing

open access: yesNature Communications, 2020
Though efforts toward electrically-pumped lasers based on simple organic light-emitting diode (OLED) structures have been reported, a comprehensive model is needed to elucidate key optoelectronic processes.
Viqar Ahmad   +9 more
doaj   +1 more source

Mid-infrared wavelength- and frequency-modulation spectroscopy with a pump-modulated singly-resonant optical parametric oscillator [PDF]

open access: yes, 2006
We describe the implementation of the wavelength- and frequency-modulation spectroscopy techniques using a singly-resonant optical parametric oscillator (OPO) pumped by a fiber-amplified diode laser.
Adhimoolam, B.   +4 more
core   +3 more sources

Compact Polygonal Active-Mirror Laser With Composite Nd:YAG/YAG Gain Medium

open access: yesIEEE Photonics Journal, 2017
A compact polygonal active-mirror (PAM) laser with composite Nd: YAG/YAG multithin-disk gain medium has been demonstrated with total internal reflection scheme. Five Nd:YAG thin disks with a neodymium concentration of 0.7 at.% and thickness
Yanzhong Chen   +9 more
doaj   +1 more source

High-Power Continuous-Wave Directly-Diode-Pumped Fiber Raman Lasers

open access: yes, 2015
We describe novel fiber Raman lasers pumped directly by spectrally combined high power multimode laser diodes at ~975 nm and emitting at ~1019 nm. With a commercial multimode graded-index fiber, we reached 20 W of laser output power with a record slope ...
T. Yao   +3 more
semanticscholar   +1 more source

Study of Fe:ZnSe Laser Exited by Diode Side-Pumped Er:YAG Laser

open access: yesPhotonics, 2023
The performance of a Fe:ZnSe laser was investigated in different schemes of excitation by a pulsed diode side-pumped Er:YAG laser. At the temperature of liquid nitrogen, the Fe:ZnSe laser, pumped by a free running 360-μs Er:YAG laser and demonstrated a ...
Vladimir Kozlovsky   +5 more
doaj   +1 more source

Randomly polarised beam produced by magnetooptically Q-switched laser

open access: yesScientific Reports, 2017
Diode-pumped solid-state micro lasers are compact (centimetre-scale), highly stable, and efficient. Previously, we reported Q-switched lasers incorporating rare-earth substituted iron garnet (RIG) film. Here, the first demonstration of the magnetooptical
Ryohei Morimoto   +9 more
doaj   +1 more source

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