In passive enhancement cavities the achievable power level is limited by mirror damage. Here, we address the design of robust optical resonators with large spot sizes on all mirrors, a measure that promises to mitigate this limitation by decreasing both the intensity and the thermal gradient on the mirror surfaces. We introduce a misalignment sensitivity metric to evaluate the robustness of resonator designs. We identify the standard bow-tie resonator operated close to the inner stability edge as the most robust large-mode cavity and implement this cavity with two spherical mirrors with 600 mm radius of curvature, two plane mirrors and a round trip length of 1.2 m, demonstrating a stable power enhancement of near-infrared laser light by a factor of 2000. Beam radii of 5.7 mm × 2.6 mm (sagittal × tangential 1/e(2) intensity radius) on all mirrors are obtained. We propose a simple all-reflective ellipticity compensation scheme. This will enable a significant increase of the attainable power and intensity levels in enhancement cavities.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OE.21.011606 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Enhanced Nasal-to-Brain Drug Delivery by Multivalent Bioadhesive Nanoparticle Clusters for Cerebral Ischemic Reperfusion Injury Protection.
Acta Biomater
January 2025
School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China; School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou, 510275, China. Electronic address:
Following cerebral ischemia, reperfusion injury can worsen ischemia-induced functional, metabolic disturbances, and pathological damage upon blood flow restoration, potentially leading to irreversible harm. Yet, there's a dearth of advanced, localized drug delivery systems ensuring active pharmaceutical ingredient (API) efficacy in cerebral protection during ischemia-reperfusion. This study introduces a multivalent bioadhesive nanoparticle-cluster, merging bioadhesive nanoparticles (BNPs) with dendritic polyamidoamine (PAMAM), enhancing nose-to-brain delivery and brain protection efficacy against cerebral ischemia-reperfusion injuries (CIRI).
View Article and Find Full Text PDFUnderstanding microbial-host interactions in the oral cavity is essential for elucidating oral disease pathogenesis and its systemic implications. bacteria-host cell coculture models have enabled fundamental studies to characterize bacterial infection and host responses in a reductionist yet reproducible manner. However, existing coculture models fail to replicate the physiological oxygen gradients critical for studying these interactions.
View Article and Find Full Text PDFMeasurement of Fluoride Ion Release From Restorative Material Using an Ion-Selective Electrode and Ultraviolet-Visible Light Spectrophotometer.
J Int Soc Prev Community Dent
December 2024
Department of Environmental Science, School of Life Sciences, Mysuru, JSS Academy of Higher Education and Research, Mysore, Karnataka, India.
Background: Importance of fluoride in dental restorative materials for preventing secondary caries. Several commercially available tooth-colored dental restorative materials, such as glass ionomer cement, resin composites, and compomers were used for this study.
Aim: To evaluate the amount of fluoride release from tooth-colored restorative materials [Conventional Glass Ionomer Cement (GC Fuji II)], Resin-modified Glass Ionomer Cement (ACTIVA BioACTIVE-RESTORATIVE), and Giomer (BEAUTIFIL II LS)] using ion-selective electrode (ISE) and spectrophotometer using zirconyl alizarin red dye method.
Comparison of Chairside Cooperative Ability with Social Quotient of Mentally Challenged Children.
Int J Clin Pediatr Dent
December 2024
Department of Pedodontics & Preventive Dentistry, Chettinad Dental College and Research Institute, Kelambakkam, Tamil Nadu, India.
Aims And Background: Fostering a positive dental attitude in children to enhance their oral health status and engaging them positively throughout their dental experience is the cornerstone of pediatric dentistry practices. The behavior of the child in a dental setting depends upon their emotional, psychological, and mental developmental state. Children with special health needs tend to have more anxiety than healthy children.
View Article and Find Full Text PDFExpert Usability Evaluation of a Mobile Application for Systematic Caries Management in Children and Adolescents: A Cross-sectional Study.
Int J Clin Pediatr Dent
December 2024
Department of Dental Hygiene, Namseoul University, Cheonan, South Korea.
Aims And Background: The field of mobile healthcare (mHealth) has attracted attention, and the quality of mHealth applications is also being addressed. Therefore, usability evaluation should be conducted to verify the quality of mHealth applications. The aim of this study was to conduct an expert evaluation to verify the systematic aspects and usability of a mobile application ("CAMBRA-students") developed to evaluate caries risk in children and adolescents and to provide systematic caries management.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!