Results 41 to 50 of about 4,960 (272)

Nonlinear terahertz devices utilizing semiconducting plasmonic metamaterials

, 2015
The development of responsive metamaterials has enabled the realization of compact tunable photonic devices capable of manipulating the amplitude, polarization, wave vector, and frequency of light. Integration of semiconductors into the active regions of
Averitt, Richard D., Bank, Seth R., Fan, Kebin, Keiser, George R., Maddox, Scott J., Seren, Huseyin R., Zhang, Jingdi, Zhang, Xin, Zhao, Xiaoguang   +8 more
core   +1 more source

Incoherent "Slow and Fast Light"

, 2009
We show experimentally that the effects of "slow and fast light" that are considered to be caused by spectral hole-burning under conditions of coherent population oscillations (CPO) can be universally observed with incoherent light fields on objects with
Aleksandrov, Bigelow, Bigelow, Gleb Kozlov, Hercher, Ku, Macke, Mocker, Schwarz, Selden, Valerii Zapasskii, Zapasskii, Zapasskii   +12 more
core   +1 more source

Enhanced reverse saturable absorption and optical limiting in heavy-atom-substituted phthalocyanines [PDF]

, 1994
The reverse saturable absorption and the optical-limiting response of metal phthalocyanines can be enhanced by use of the heavy-atom effect. Phthalocyanines containing heavy-metal atoms, such as In, Sn, and Pb, show a nearly factor-of-2 enhancement in ...
Alvarez, Daniel, Jr., Choong, Ingrid, Mansour, Kamjou, Marder, Seth R., Perry, Joseph W., Perry, Kelly J.   +5 more
core   +1 more source

Gigahertz femtosecond laser-by a novel asymmetric one-dimensional photonic crystal saturable absorber device with defect layer

Nanophotonics, 2022
High repetition frequency (HRF) ultrashort pulse fiber laser has been widely used in laser cold processing. The technical solutions such as short cavity length fiber laser have been proposed to achieve HRF ultrashort pulse output recently.
Song Chun-Yu, Chen Hua-Long, Wang Yong-Jie, Jin Liang, Xu Ying-Tian, Shi Lin-Lin, Zou Yong-Gang, Ma Xiao-Hui, Song Yu-Feng, Wang Cong, Zhang Ya-Ting, Lin Ja-Hon, Zhang He, Zhang Han, Yao Jian-Quan   +14 more
doaj   +1 more source

Multilayer black phosphorus as broadband saturable absorber for pulsed lasers from 1 to 2.7 {\mu}m wavelength

, 2015
It attracts wide interest to seek universe saturable absorber covering wavelengths from near infrared to mid-infrared band. Multilayer black phosphorus, with variable direct bandgap (0.3-2 eV) depending on the layer number, becomes a good alternative as ...
Guo, Zhinan, Kong, Lingchen, Qian, Liejia, Qin, Zhipeng, Xie, Guoqiang, Yuan, Peng, Zhang, Han   +6 more
core   +1 more source

Characterization of the nonlinear optical properties of Zn and Ag nanoparticles using light at 1550 nm

Results in Optics
Nonlinear optical properties of metallic and oxide metallic nanoparticles have been extensively studied as saturable absorbers in fiber-optic lasers in the infrared region for the generation of short and/or ultrashort pulses.
A. Guzmán-Barraza, J.G. Ortega-Mendoza, A. Padilla-Vivanco, M.L. Arroyo Carrasco, N.R. Silva-González, P. Zaca-Morán, E.V. García Ramírez   +6 more
doaj   +1 more source

High-Quality, InN-Based, Saturable Absorbers for Ultrafast Laser Development

Applied Sciences, 2020
New fabrication methods are strongly demanded for the development of thin-film saturable absorbers with improved optical properties (absorption band, modulation depth, nonlinear optical response).
Laura Monroy, Marco Jiménez-Rodríguez, Eva Monroy, Miguel González-Herráez, Fernando B. Naranjo   +4 more
doaj   +1 more source

Chasing 'Slow Light' [PDF]

, 2006
A critical review of experimental studies of the so-called 'slow light' arising due to anomalously high steepness of the refractive index dispersion under conditions of electromagnetically induced transparency or coherent population oscillations is ...
Aleksandrov, E. B., Zapasskii, V. S.
core   +1 more source

Inhibiting stearoyl‐CoA desaturase suppresses bone metastatic prostate cancer by modulating cellular stress, mTOR signaling, and DNA damage response

FEBS Letters, EarlyView.
Bone metastasis in prostate cancer (PCa) patients is a clinical hurdle due to the poor understanding of the supportive bone microenvironment. Here, we identify stearoyl‐CoA desaturase (SCD) as a tumor‐promoting enzyme and potential therapeutic target in bone metastatic PCa.
Alexis Wilson, Mackenzie K Herroon, Shane Mecca, Laimar C Garmo, Jacob Lindquist, Shrila Rajendran, Steve M. Patrick, Izabela Podgorski   +7 more
wiley   +1 more source

High Modulation Depth Enabled by Mo₂Ti₂C₃T_x MXene for Q-Switched Pulse Generation in a Mid-Infrared Fiber Laser

Nanomaterials, 2022
Two-dimensional (2D) materials show great promise as saturable absorbers (SAs) for ultrafast fiber lasers. However, the relatively low modulation depth and poor stability of some 2D materials, such as graphene and black phosphorus, restrict their ...
Xin Guo, Shuai Wang, Peiguang Yan, Jinzhang Wang, Linpeng Yu, Wenjun Liu, Zhijian Zheng, Chunyu Guo, Shuangchen Ruan   +8 more
doaj   +1 more source