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We report on the successful demonstration of a 100 J-level, diode pumped solid state laser based on cryogenic gas cooled, multi-slab ceramic Yb:YAG amplifier technology. When operated at 175 K, the system delivered a pulse energy of 107 J at a 1 Hz repetition rate and 10 ns pulse duration, pumped by 506 J of diode energy at 940 nm, corresponding to an optical-to-optical efficiency of 21%. To the best of our knowledge, this represents the highest energy obtained from a nanosecond pulsed diode pumped solid state laser. This demonstration confirms the energy scalability of the diode pumped optical laser for experiments laser architecture.
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http://dx.doi.org/10.1364/OL.41.002089 | DOI Listing |
PLoS One
September 2025
School of Physics and Astronomy, Yunnan University, Kunming, China.
Using tunable in-band laser diode (LD) pumping (791.1-798.2 nm), an orthogonally polarized dual-wavelength (OPDW) Nd:LaMgAl11O19/Nd:SrAl12O19 (Nd:LMA/Nd:SA) operation at 1297 nm and 1306 nm for the 4F3/2 → 4I13/2 transition is demonstrated for the first time.
View Article and Find Full Text PDFAdv Mater
September 2025
Department of Biosystems Science and Engineering, ETH Zürich, Klingelbergstrasse 48, Basel, CH-4056, Switzerland.
Herein, an implantable, miniature biohybrid device has been developed that utilizes light-dependent ion-gradient formation by genetically engineered human designer cells, expressing light-activated ion channels and proton pumps to generate electrical potential and deliver electrical energy. These designer cells are cultured in custom-designed polycarbonate chambers, connected by electrodes and separated from an ion reservoir by a proton-selective Nafion membrane. Upon illumination, the light-activated channels and pumps on the designer cells establish a sustained proton gradient across the Nafion membrane, which drives an electrical current in the external circuit.
View Article and Find Full Text PDFLight Sci Appl
August 2025
State Key Laboratory of Quantum Functional Materials, Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
Colloidal quantum dots (QDs) are promising gain materials for realizing solution-processable, wavelength-tunable and low-cost laser diodes. However, achieving electrically pumped amplified spontaneous emission (ASE) in QDs, a prerequisite for lasing, is hampered by the low net optical gain and low current injection of the diodes. Here we demonstrate electrically pumped and surface-emitting ASE from QDs by electro-thermal-optically co-designing a quantum-dot light-emitting diode (QLED) with high net optical gain and high current injection.
View Article and Find Full Text PDFPhys Rev E
July 2025
Immanuel Kant Baltic Federal University, Baltic Center for Neurotechnology and Artificial Intelligence, Kaliningrad 236041, Russia.
We present an approach combining reservoir computing and nonlinear dynamics to replicate the behavior of stochastic systems, even when only partial observations are available. Unlike conventional RC applications, our approach systematically evaluates the conditions under which a system can be "strongly" cloned (exact trajectory prediction) versus "weakly" cloned (statistical replication), leveraging external noise excitation to infer hidden dynamics. By applying external noise and analyzing the system response, we demonstrate the feasibility of our approach both theoretically and experimentally.
View Article and Find Full Text PDFWe report on the development of a cladding-pumped ultra-broadband optical amplifier for a spectral region of 1260-1480 nm using a Bi-doped fiber (BDF) with heterogeneous core formed by combination of PO- and GeO-containing glass layers. This BDF design ensures a favorable local environment for the effective formation process of BACs associated with P and Si atoms. The BDF amplifier (BDFA) pumped into the cladding by multi-mode laser diodes at 793 and 808 nm is characterized by a peak gain of ≈24 dB, a minimum noise figure of ≈6 dB, and a bandwidth of ≈160 nm at a gain level of 20 dB.
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