scholarly journals Femtosecond Pulse Temporal Overlap Estimation and Adjustment in SSFS-Based CARS System

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 131317-131325 ◽  
Author(s):  
Yongning Zhang ◽  
Junfeng Jiang ◽  
Shuang Wang ◽  
Kun Liu ◽  
Zhe Ma ◽  
...  
Keyword(s):  
Femtosecond Pulse ◽  
Temporal Overlap

A Comparison of Simple Structure Rotation Criteria in Temporal Exploratory Factor Analysis for Event-Related Potential Data

Methodology ◽  
2019 ◽  
Vol 15 (Supplement 1) ◽  
pp. 43-60 ◽  
Author(s):  
Florian Scharf ◽  
Steffen Nestler
Keyword(s):  
Factor Analysis ◽  
Exploratory Factor Analysis ◽  
Simple Structure ◽  
Ground Truth ◽  
Event Related Potential ◽  
Suitable Alternative ◽  
Factor Rotation ◽  
Rotation Methods ◽  
Simple Structure Rotation ◽  
Temporal Overlap

Abstract. It is challenging to apply exploratory factor analysis (EFA) to event-related potential (ERP) data because such data are characterized by substantial temporal overlap (i.e., large cross-loadings) between the factors, and, because researchers are typically interested in the results of subsequent analyses (e.g., experimental condition effects on the level of the factor scores). In this context, relatively small deviations in the estimated factor solution from the unknown ground truth may result in substantially biased estimates of condition effects (rotation bias). Thus, in order to apply EFA to ERP data researchers need rotation methods that are able to both recover perfect simple structure where it exists and to tolerate substantial cross-loadings between the factors where appropriate. We had two aims in the present paper. First, to extend previous research, we wanted to better understand the behavior of the rotation bias for typical ERP data. To this end, we compared the performance of a variety of factor rotation methods under conditions of varying amounts of temporal overlap between the factors. Second, we wanted to investigate whether the recently proposed component loss rotation is better able to decrease the bias than traditional simple structure rotation. The results showed that no single rotation method was generally superior across all conditions. Component loss rotation showed the best all-round performance across the investigated conditions. We conclude that Component loss rotation is a suitable alternative to simple structure rotation. We discuss this result in the light of recently proposed sparse factor analysis approaches.

Temporal overlap among small- and medium-sized mammals in a grassland and a forest–alpine meadow of Central Asia

2021 ◽  
Author(s):  
Emiliano Mori ◽  
Chiara Paniccia ◽  
Bariushaa Munkhtsog ◽  
Maila Cicero ◽  
Claudio Augugliaro
Keyword(s):  
Central Asia ◽  
Alpine Meadow ◽  
Temporal Overlap

scholarly journals Broadband and Tunable 920-nm Femtosecond Pulse Generated by an All-Fiber Er:Fiber Laser System

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 29660-29664
Author(s):  
Kai Qian ◽  
Hao Luo ◽  
Da Qiu ◽  
Shengli Pu ◽  
Wencai Yao
Keyword(s):  
Femtosecond Pulse ◽  
Laser System

Femtosecond pulse duration as a tool for controlling high fluence of laser filament in air

2009 ◽  
Author(s):  
Elena P. Silaeva ◽  
Oleg V. Tverskoy ◽  
Valerii P. Kandidov
Keyword(s):  
Pulse Duration ◽  
Femtosecond Pulse ◽  
High Fluence

High average power coherent femtosecond pulse combining system based on an all fiber active control method

2018 ◽  
Vol 15 (7) ◽  
pp. 075101 ◽  
Author(s):  
H L Yu ◽  
Z X Zhang ◽  
X L Wang ◽  
R T Su ◽  
H W Zhang ◽  
...  
Keyword(s):  
Active Control ◽  
Femtosecond Pulse ◽  
Control Method ◽  
Average Power ◽  
High Average Power ◽  
Active Control Method

65-femtosecond pulse generation from a synchronously pumped dye laser without a colliding-pulse mode-locking technique

1987 ◽  
Vol 12 (9) ◽  
pp. 681 ◽  
Author(s):  
Masataka Nakazawa ◽  
Takashi Nakashima ◽  
Hirokazu Kubota ◽  
Shigeyuki Seikai
Keyword(s):  
Femtosecond Pulse ◽  
Mode Locking ◽  
Pulse Mode ◽  
Pulse Generation ◽  
Dye Laser ◽  
Synchronously Pumped

Femtosecond pulse-shaping scheme for cross-phase modulation in single-mode optical fibers

1994 ◽  
Vol 11 (8) ◽  
pp. 1451 ◽  
Author(s):  
G. R. Boyer ◽  
M. A. Franco ◽  
M. Lachgar ◽  
B. Grèzes-Besset ◽  
A. Alexandrou
Keyword(s):  
Optical Fibers ◽  
Phase Modulation ◽  
Pulse Shaping ◽  
Femtosecond Pulse ◽  
Single Mode ◽  
Cross Phase Modulation
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