Related Experiment Video
Updated: Jan 20, 2026
14:18
Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
11.9K
Pb7F12Cl2: a promising infrared nonlinear optical material with high laser damage threshold
1Department of Chemistry, Hubei Normal University, Huangshi, 435002, China. wuqi2011@whu.edu.cn.
Dalton Transactions (Cambridge, England : 2003)
|August 28, 2019
Summary
Pb7F12Cl2 exhibits promising infrared nonlinear optical properties, showing 1.6 times higher second-harmonic generation than KDP and a superior laser damage threshold. This material demonstrates potential for advanced infrared applications.
Area of Science:
- Materials Science
- Solid State Physics
- Optics
Background:
- Developing advanced infrared nonlinear optical (NLO) materials is crucial for laser technology.
- Existing materials often face limitations in performance or durability.
Purpose of the Study:
- To investigate the nonlinear optical properties of Pb7F12Cl2 for infrared applications.
- To evaluate its potential as a superior alternative to current NLO materials.
Main Methods:
- Powder second-harmonic generation (SHG) measurements.
- UV-Vis absorption spectroscopy to determine band gap.
- Laser damage threshold (LDT) testing.
- First-principles theoretical calculations (band structure, electronic configuration, NLO coefficients).
Main Results:
- Pb7F12Cl2 exhibits phase-matchable SHG properties, 1.6 times stronger than KH2PO4 (KDP).
- Achieved infrared transmission up to 20 μm with a band gap of 4.5 eV.
- Demonstrated a high preliminary LDT of 80 MW cm-2, significantly exceeding that of commercial AgGaS2.
Conclusions:
- Pb7F12Cl2 is a promising infrared NLO material with excellent SHG efficiency and a high laser damage threshold.
- Its properties suggest suitability for demanding infrared optical applications.
- Theoretical analysis elucidated the contribution of lead atom coordination to its NLO response.
Related Concept Videos
01:22Nonlinear Pharmacokinetics: Causes of Nonlinearity
712
Nonlinearity in drug pharmacokinetics is caused by various factors influencing how a drug is absorbed, distributed, metabolized, and excreted. Understanding these nonlinear processes is crucial for predicting drug behavior in the body and optimizing drug dosing regimens.
Nonlinear drug absorption can occur when the process is rate-limited by solubility, carrier-mediated transport systems, or saturation of the presystemic gut wall or hepatic metabolism. For instance, high doses of riboflavin...
Nonlinear drug absorption can occur when the process is rate-limited by solubility, carrier-mediated transport systems, or saturation of the presystemic gut wall or hepatic metabolism. For instance, high doses of riboflavin...
712
01:19Nonlinear Pharmacokinetics: Overview
1.1K
Nonlinear or dose-dependent pharmacokinetics is a phenomenon that occurs when the pharmacokinetic parameters of certain drugs deviate from linear pharmacokinetics at higher doses. These drugs do not follow the expected first-order kinetics, where the rate of drug elimination is directly proportional to the drug concentration. Instead, they exhibit a nonlinear relationship, which can be attributed to several factors.
Nonlinearity can arise due to the saturation of plasma protein-binding or...
Nonlinearity can arise due to the saturation of plasma protein-binding or...
1.1K
01:18Nonlinear Pharmacokinetics: Michaelis-Menten Equation
1.0K
The Michaelis–Menten equation is a fundamental model for describing capacity-limited kinetics in drug metabolism. It offers insights into the rate of decline of plasma drug concentration Cp over time, with Vmax and KM as pivotal parameters.
Vmax represents the maximum achievable process rate, while KM, known as the Michaelis constant, signifies the drug concentration at which the process rate reaches half its maximum. This relationship between Vmax, KM, and Cp gives rise to three distinct...
Vmax represents the maximum achievable process rate, while KM, known as the Michaelis constant, signifies the drug concentration at which the process rate reaches half its maximum. This relationship between Vmax, KM, and Cp gives rise to three distinct...
1.0K
01:27Nonlinear Pharmacokinetics: Role of Transporters
284
A drug's nonlinear kinetics can be influenced by a diverse range of transporter proteins that serve as crucial players in drug distribution. These transporters, found within cells, can enhance or reduce local drug concentrations by facilitating the influx or efflux of drugs. For instance, the expression of xenobiotic transporters can be influenced by factors such as age and gender, potentially impacting the linearity of drug response.
Polymorphisms occurring in drug transporters can alter...
Polymorphisms occurring in drug transporters can alter...
284
01:22Nonlinear Pharmacokinetics: Bioavailability and Protein-Drug Binding
599
When a drug follows nonlinear pharmacokinetics, its bioavailability, the amount of the drug that reaches the systemic circulation, can change with different doses. This is due to the presence of a saturable pathway. The pathway becomes saturated as the drug concentration increases, decreasing the absorption rate. Consequently, the drug's bioavailability may be lower than expected at higher doses.
To quantify the extent of bioavailability, pharmacologists often use a parameter called .
To quantify the extent of bioavailability, pharmacologists often use a parameter called .
599
01:19Members Made of Elastoplastic Material
376
The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...
As the bending moment...
376