Optical Materials最新文献_第10页

A review of 2 μm all-solid-state picosecond laser sources doped with Tm3,+/Ho3,+ ions

IF 3.8 3区材料科学

Optical Materials Pub Date : 2025-03-04 DOI: 10.1016/j.optmat.2025.116888

Hong-Wei Yin , Yun-Fei Li , Yun-Fei Yang , Chen-Yu Zhu , Da Li , Gong Wang , Shu-Ping Hou , Yu Yu , Yulei Wang , Zhiwei Lu

{"title":"A review of 2 μm all-solid-state picosecond laser sources doped with Tm3,+/Ho3,+ ions","authors":"Hong-Wei Yin , Yun-Fei Li , Yun-Fei Yang , Chen-Yu Zhu , Da Li , Gong Wang , Shu-Ping Hou , Yu Yu , Yulei Wang , Zhiwei Lu","doi":"10.1016/j.optmat.2025.116888","DOIUrl":"10.1016/j.optmat.2025.116888","url":null,"abstract":"<div><div>All-solid-state 2 μm ultrafast laser sources exhibit significant potential in diverse application fields. Their wavelength falls within the atmospheric window, effectively covering the absorption spectral lines of numerous molecules. The picosecond all-solid-state laser sources with a centre wavelength of 2 μm serves as a prime example, gaining prominence in the mid-infrared ultrafast laser domain recently. This paper first outlines several representative 2 μm solid-state ultrafast lasers. It then elaborates on crucial technologies for generating 2 μm ps lasers, focusing on mode-locking techniques. Additionally, it reviews recent progress in picosecond Tm3+/Ho3+ ions-doped all-solid-state laser sources operating in the 2 μm wavelength range. What's more, the discussion highlights key applications of all-solid-state picosecond laser sources that utilize Tm3+ and Ho3+. In conclusion, the paper traces the evolution of picosecond all-solid-state laser sources with a central wavelength of 2 μm and offers perspectives on future advancements.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116888"},"PeriodicalIF":3.8,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced optical and magnetic properties of NiZrO3-modified Bi1/2Na1/2TiO3 solid solutions synthesized via chemical method

IF 3.8 3区材料科学

Optical Materials Pub Date : 2025-03-04 DOI: 10.1016/j.optmat.2025.116891

Nguyen Thi Lan Anh , Nguyen Huu Lam , Dang Duc Dung

引用次数: 0

Small-angle X-ray scattering analysis of polymer optical fibers

IF 3.8 3区材料科学

Optical Materials Pub Date : 2025-03-03 DOI: 10.1016/j.optmat.2025.116856

M. Ferraro , R. Filosa , Q.A. Alamu , K. Kiedrowski , M. Jupé , M. Leonetti , S. Wabnitz , B. Marmiroli , R.C. Barberi , V. Formoso , R.G. Agostino

引用次数: 0

Saturable absorption, optical limiting and ultrafast laser-induced two-photon fluorescence in Caesalpinia sappan (sappanwood) natural dye

IF 3.8 3区材料科学

Optical Materials Pub Date : 2025-03-03 DOI: 10.1016/j.optmat.2025.116886

Preetha Kurungod Prabhakaran, Muthaiyan Xavier Suresh, Rajdeep Singh Payal

{"title":"Saturable absorption, optical limiting and ultrafast laser-induced two-photon fluorescence in Caesalpinia sappan (sappanwood) natural dye","authors":"Preetha Kurungod Prabhakaran, Muthaiyan Xavier Suresh, Rajdeep Singh Payal","doi":"10.1016/j.optmat.2025.116886","DOIUrl":"10.1016/j.optmat.2025.116886","url":null,"abstract":"<div><div>In this work, we extract the natural dye present in the bark of the medicinal tree Caesalpinia Sappan (sappanwood) and investigate its linear and nonlinear optical (NLO) properties. Nonlinear refraction and absorption are measured by Z-scan at 532 nm using continuous wave and pulsed (5 ns) Nd:YAG lasers, and two-photon fluorescence is measured using 800 nm ultrafast (100 fs) pulses obtained from a Ti:Sapphire laser. The dye exhibits a marked transition from saturable to reverse saturable absorption depending on its concentration and laser intensity. Nonlinear refraction and saturable absorption (SA) are observed under CW excitation at relatively lower laser intensities (≈104 W/m2) whereas reverse saturable absorption (RSA) is observed at higher intensities (≈106 W/m2). Nonlinear refractive indices (n2) are in the order of 10−9 m2/W, saturation intensities (Is) are in the order of 105 W/m2, and effective nonlinear absorption coefficients (β) are in the order of 10−5 to 10−3 m/W. For pulsed excitation, SA is observed for intensities in the range of 1010–1012 W/m2 while RSA is seen at 1013 W/m2 β values obtained for pulsed excitation are in the range of 10−11 to 10−10 m/W. Measured two-photon fluorescence spectra resemble the normal fluorescence spectrum of the dye. These NLO results are comparable to those reported for efficient NLO materials in literature, indicating the potential application of Caesalpinia Sappan dye in the generation of short laser pulses, optical switching, optical limiting for eye and sensor protection, and imaging of tissues and other biological matter.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116886"},"PeriodicalIF":3.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced field-assisted passivation and optical properties improvement of PECVD deposited SiNx:H thin film

IF 3.8 3区材料科学

Optical Materials Pub Date : 2025-03-03 DOI: 10.1016/j.optmat.2025.116885

Alamgeer , Hasnain Yousuf , Muhammad Quddamah Khokhar , Rafi ur Rahman , Chu Mengmeng , Maha Nur Aida , Polgampola Chamani Madara , Jaljalalul Abedin Jony , Seokjin Jang , Junhan Bae , Shurouq Abdulqadir Mohammed , Sangheon Park , Junsin Yi

{"title":"Enhanced field-assisted passivation and optical properties improvement of PECVD deposited SiNx:H thin film","authors":"Alamgeer , Hasnain Yousuf , Muhammad Quddamah Khokhar , Rafi ur Rahman , Chu Mengmeng , Maha Nur Aida , Polgampola Chamani Madara , Jaljalalul Abedin Jony , Seokjin Jang , Junhan Bae , Shurouq Abdulqadir Mohammed , Sangheon Park , Junsin Yi","doi":"10.1016/j.optmat.2025.116885","DOIUrl":"10.1016/j.optmat.2025.116885","url":null,"abstract":"<div><div>This article investigates field-assisted passivation in hydrogenated silicon nitride (SiNx:H) with reduced absorption loss by utilizing two different purities of saline (SiH4) gas and their deposition conditions using plasma-enhanced chemical vapor deposition (PECVD). The impact of varying NH3:SiH4 flow rate using SiH4 (gas 2) is better and more reliable than SiH4 (gas 1) in terms of the refractive index (R.I), deposition conditions and lifetime. A gas ratio (GR) of 1.3 results in an optimal R.I of 2.06, thickness of 73.62 nm, and a deposition rate of 0.98 nm/s, achieving the highest optical transmittance of 93.33 % at 300 °C, with an improved lifetime of 473.45 μs calculated for SiH4 gas 2 as compared to gas 1. The bandgap of GR 1.3 is calculated as 3.28 eV using Tauc plot since this condition is best for single-layer antireflection coating (SLAR). Capaciatance-Voltage (CV) measurements were carried out for different flow rates of gas 2 at 10 kHz and 1 MHz to carry out defect interface density (Dit). However, the Dit effect varies with flow rates as 2.35 × 1012 to 3.925 × 1013 cm2/eV. Fixed charge density (Qf) varies as we go up to nitrogen-rich content and reaches up to 6.6 × 1012 (cm−2). These results indicate the importance of precise control over gas conditions to optimize SiNx:H films for advanced photovoltaics applications.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116885"},"PeriodicalIF":3.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Luminescent garnets: A tutorial overview

IF 3.8 3区材料科学

Optical Materials Pub Date : 2025-03-01 DOI: 10.1016/j.optmat.2025.116879

Cees Ronda

引用次数: 0

Enhancing 1.43 μm emission of Tm3+ ions by co-doing Pr3+ ions in CNGG crystals grown by the micro-pulling-down method

IF 3.8 3区材料科学

Optical Materials Pub Date : 2025-03-01 DOI: 10.1016/j.optmat.2025.116875

Zihang Chen , Di Liu , Peng Chen , Jun Guo , Peng Liu , Xiaodan Wang , Jian Liu , Xiaodong Xu , Jun Xu

{"title":"Enhancing 1.43 μm emission of Tm3+ ions by co-doing Pr3+ ions in CNGG crystals grown by the micro-pulling-down method","authors":"Zihang Chen , Di Liu , Peng Chen , Jun Guo , Peng Liu , Xiaodan Wang , Jian Liu , Xiaodong Xu , Jun Xu","doi":"10.1016/j.optmat.2025.116875","DOIUrl":"10.1016/j.optmat.2025.116875","url":null,"abstract":"<div><div>Tm3+ and Pr3+ co-doped calcium niobium gallium garnet (Tm,Pr:CNGG) crystals have been successfully grown using the micro-pulling-down (μ-PD) method. A comprehensive analysis of their optical properties was conducted through measurements of the absorption spectra, fluorescence spectra, and fluorescence decay curves at room temperature. For 2.0 at.% Tm:CNGG crystal, the broad absorption band of Tm3+:3H6→3H4 transition was centered at around 785 nm with the full width at half maximum (FWHM) of 15.3 nm, which aligns well with the commercial AlGaAs laser diode pumping sources. The fluorescence lifetime of Tm3+:3F4 level of 2 at.% Tm, 0.5 at.% Pr:CNGG crystal was quenched effectively (from 3.72 ms down to 0.36 ms). These results indicate that Pr3+ ions serve as effective deactivation ions, enhancing the population inversion between the 3H4 and 3F4 energy levels of Tm3+ ions, facilitating the emission of Tm,Pr:CNGG crystals in the 1.5 μm wavelength region.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116875"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of porous CuxZn1-xS/ GaN heterojunctions for ultraviolet photodetector application

IF 3.8 3区材料科学

Optical Materials Pub Date : 2025-02-28 DOI: 10.1016/j.optmat.2025.116881

KaiDa Jia , Wei Jia , TianBao Li , GuangMei Zhai , HengLei Ren , HaiLiang Dong , PengQi Dong , BingShe Xu

{"title":"Fabrication of porous CuxZn1-xS/ GaN heterojunctions for ultraviolet photodetector application","authors":"KaiDa Jia , Wei Jia , TianBao Li , GuangMei Zhai , HengLei Ren , HaiLiang Dong , PengQi Dong , BingShe Xu","doi":"10.1016/j.optmat.2025.116881","DOIUrl":"10.1016/j.optmat.2025.116881","url":null,"abstract":"<div><div>Porous CuxZn1-xS/GaN UV Photodetectors fabricated by a heterojunction between porous n-GaN and CuxZn1-xS films were prepared by high-temperature annealing and chemical bath deposition. By adjusting the ratio of Cu and Zn in the CuxZn1-xS films, with x defined as Cu (mol%)/(Cu + Zn) (mol%), distinct transparency, conductivity, and energy banding properties are achieved, which thereby significantly influences the optoelectronic performance of the UV PDs. The findings of the study demonstrated that the devices exhibit excellent rectification characteristics and repeatable photocurrent responses. When the value of x is 0.4, in particular, exhibits pronounced performances working under an ultraviolet light of 43.5 μW/cm2 at 0 V, including high on/off ratio (∼5.27 × 104), remarkable responsivity (0.574 A/W), ultrahigh specific detectivity (8.75 × 1014 Jones), high external quantum efficiency (195.02 %) and fast response speed (0.09/36 ms). This study provides theoretical insights and experimental evidence to facilitate the development of next-generation optoelectronic devices utilizing CuxZn1-xS/GaN heterojunctions.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116881"},"PeriodicalIF":3.8,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Q-switched and mode-locked fiber laser based on Co-MOFs as saturable absorber

IF 3.8 3区材料科学

Optical Materials Pub Date : 2025-02-27 DOI: 10.1016/j.optmat.2025.116880

Zefei Ding , Cunguang Zhu , Xiaohui Du , Chenyue Liu , Yuan Zhao , Hongguo Hao , Pengpeng Wang

{"title":"Q-switched and mode-locked fiber laser based on Co-MOFs as saturable absorber","authors":"Zefei Ding , Cunguang Zhu , Xiaohui Du , Chenyue Liu , Yuan Zhao , Hongguo Hao , Pengpeng Wang","doi":"10.1016/j.optmat.2025.116880","DOIUrl":"10.1016/j.optmat.2025.116880","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) are porous materials with highly ordered arrangements, which have been widely used in multiple fields due to their unique structure and are regarded as a frontier area in materials science. In this study, we successfully prepared Co-MOFs crystal materials and used the direct coupling method to prepare Co-MOFs saturable absorber (SA). Then, using the balanced two-arm detection device, the modulation depth of Co-MOFs was measured to be 18.83 %. We introduced the same Co-MOFs SA into the resonant cavities of two erbium-doped fiber lasers containing different gain fibers (Er-110 and Er-OFS). In the fiber laser with Er-OFS, we observed stable Q-switched pulse, obtaining a maximum single pulse energy of 44.53 nJ. In the fiber laser with Er-110, stable conventional soliton mode-locking was successfully achieved, generating mode-locked pulses with a central wavelength of 1557.5 nm, a 3 dB bandwidth of 2.95 nm, and a signal-to-noise ratio (SNR) of 61.4 dB. This study demonstrates the potential of Co-MOFs for ultrafast photonics applications and is expected to facilitate further exploration of their nonlinear optical properties.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116880"},"PeriodicalIF":3.8,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143528646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural and 1.8 μm luminescence of Ba(PO3)2 fluorophosphate glass

IF 3.8 3区材料科学

Optical Materials Pub Date : 2025-02-27 DOI: 10.1016/j.optmat.2025.116872

Haibin Yu , Yu Yue , Junjie Gao , Yi Wang , Chongyun Shao

{"title":"Structural and 1.8 μm luminescence of Ba(PO3)2 fluorophosphate glass","authors":"Haibin Yu , Yu Yue , Junjie Gao , Yi Wang , Chongyun Shao","doi":"10.1016/j.optmat.2025.116872","DOIUrl":"10.1016/j.optmat.2025.116872","url":null,"abstract":"<div><div>Tm3+-doped fluorophosphate glasses with different Ba(PO3)2 concentrations were fabricated using traditional melt-quenching method. Their structure, optical properties, and thermal were subsequently analyzed using Raman, FTIR, NMR spectroscopy, absorption spectroscopy, fluorescence spectroscopy, and differential scanning calorimetry. Judd-Ofelt parameters were used to analysis of the local environment changes concentration of rare-earth ions. As Ba(PO3)2 increases, the P2(O, F)7 group transforms into PO2−, resulting in an increasing Q2 groups and decreasing Q0 and Q1groups. At the same time, the percentage content of F–Al bonds decreased, whereas the F–P/F–Ba bonds content increased. DSC shows a ΔT range of 128–155 °C. The fluorescence spectrum shows an increasing and then decreasing trend, reaching a maximum at FP30. FP30 glass exhibits good thermal stability (144 °C), a broad and flat gain coefficient, a long fluorescence lifetime (6.82 ms) and large emission cross section (4.69 × 10−21 cm2), is a promising candidate for 1.8 μm laser and fiber-optic amplifiers.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116872"},"PeriodicalIF":3.8,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0