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Phase locking and absolute frequency stabilization of laser sources for a Pr:YSO quantum memory Pr:YSO 量子存储器激光源的锁相和绝对稳频功能
IF 2.3 4区 物理与天体物理
Applied Physics Express Pub Date : 2024-05-13 DOI: 10.35848/1882-0786/ad45ad
Yohei Sugiyama, Yuga Kondo, Tomoyuki Horikiri, Daisuke Akamatsu and Feng-Lei Hong
{"title":"Phase locking and absolute frequency stabilization of laser sources for a Pr:YSO quantum memory","authors":"Yohei Sugiyama, Yuga Kondo, Tomoyuki Horikiri, Daisuke Akamatsu and Feng-Lei Hong","doi":"10.35848/1882-0786/ad45ad","DOIUrl":"https://doi.org/10.35848/1882-0786/ad45ad","url":null,"abstract":"We propose a scheme to phase lock a quantum-memory control laser, frequency-conversion pump laser, and two-photon source over three octaves in frequency to operate a quantum memory. The absolute frequencies of the laser sources are determined based on a Doppler-free iodine hyperfine transition. The achieved relative frequency instability and uncertainty were ≤1 × 10–12 and 3 × 10–11, respectively, which are below the requirement for operating a Pr:YSO quantum memory. This scheme simplifies the instrumentation of laser sources in a quantum repeater, and increases the reliability of quantum communication systems.","PeriodicalId":8093,"journal":{"name":"Applied Physics Express","volume":"2 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141061115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Generation of single photon emitters at a SiO2/SiC interface by high-temperature oxidation and reoxidation at lower temperatures 通过高温氧化和低温再氧化在二氧化硅/碳化硅界面上生成单光子发射器
IF 2.3 4区 物理与天体物理
Applied Physics Express Pub Date : 2024-05-10 DOI: 10.35848/1882-0786/ad4449
Kentaro Onishi, Takato Nakanuma, Kosuke Tahara, Katsuhiro Kutsuki, Takayoshi Shimura, Heiji Watanabe, Takuma Kobayashi
{"title":"Generation of single photon emitters at a SiO2/SiC interface by high-temperature oxidation and reoxidation at lower temperatures","authors":"Kentaro Onishi, Takato Nakanuma, Kosuke Tahara, Katsuhiro Kutsuki, Takayoshi Shimura, Heiji Watanabe, Takuma Kobayashi","doi":"10.35848/1882-0786/ad4449","DOIUrl":"https://doi.org/10.35848/1882-0786/ad4449","url":null,"abstract":"We report on an approach to produce single photon emitters at the SiO<sub>2</sub>/SiC interface. We form a high-quality SiO<sub>2</sub>/SiC interface by high-temperature oxidation and subsequently perform oxidation at lower temperatures (200 °C–1000 °C) to generate the emitters. After reoxidation at 800 °C, we confirmed the formation of emitters with a bright luminescence (&gt;50 kcps). Through Hambury-Brown and Twiss measurements, single photon characteristics were confirmed. Thus, the proposed approach is effective in generating highly bright single photon emitters at the SiO<sub>2</sub>/SiC interface.","PeriodicalId":8093,"journal":{"name":"Applied Physics Express","volume":"30 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140927531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Epitaxial growth of Ca(Ge1−xSnx)2 with group IV 2D layers on Si substrate 在硅衬底上外延生长具有 IV 族二维层的 Ca(Ge1-xSnx)2
IF 2.3 4区 物理与天体物理
Applied Physics Express Pub Date : 2024-05-06 DOI: 10.35848/1882-0786/ad3ee2
Takashi Yoshizaki, Tsukasa Terada, Yuto Uematsu, Takafumi Ishibe and Yoshiaki Nakamura
{"title":"Epitaxial growth of Ca(Ge1−xSnx)2 with group IV 2D layers on Si substrate","authors":"Takashi Yoshizaki, Tsukasa Terada, Yuto Uematsu, Takafumi Ishibe and Yoshiaki Nakamura","doi":"10.35848/1882-0786/ad3ee2","DOIUrl":"https://doi.org/10.35848/1882-0786/ad3ee2","url":null,"abstract":"Two-dimensional (2D) material is drawing considerable attention as a promising thermoelectric material. This study establishes the formation method of renewed Ca-intercalated group IV 2D materials, Ca(Ge1−xSnx)2 crystals including germanene-based 2D layers. The solid phase epitaxy allows us to form epitaxial Ca(Ge1−xSnx)2 on Si. Atomic force microscopy reveals that the Ca(Ge1−xSnx)2 has island structures. X-ray diffraction proved the epitaxial growth of the Ca(Ge1−xSnx)2 island structures and the increase of the c-axis lattice constant with Sn content increase. The formation of this renewed intermetallic compound including group IV 2D layer opens an avenue for high performance thermoelectric generator/Si.","PeriodicalId":8093,"journal":{"name":"Applied Physics Express","volume":"11 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140889310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Single-frequency high-energy pulses from an Er:Yb glass planar waveguide amplifier with good beam quality 具有良好光束质量的 Er:Yb 玻璃平面波导放大器发出的单频高能脉冲
IF 2.3 4区 物理与天体物理
Applied Physics Express Pub Date : 2024-04-17 DOI: 10.35848/1882-0786/ad3a2e
Junia Nomura, Kenichi Hirosawa and Nobuo Ohata
{"title":"Single-frequency high-energy pulses from an Er:Yb glass planar waveguide amplifier with good beam quality","authors":"Junia Nomura, Kenichi Hirosawa and Nobuo Ohata","doi":"10.35848/1882-0786/ad3a2e","DOIUrl":"https://doi.org/10.35848/1882-0786/ad3a2e","url":null,"abstract":"We demonstrate a master oscillator power amplifier system that emits single-frequency, high-energy optical pulses at 1539 nm using an Er, Yb:glass planar waveguide amplifier with a normalized frequency of the waveguide of 4.4. A maximum pulse energy of 9.7 mJ is observed at a repetition frequency of 500 Hz. The signal to noise ratio is 25 dB and is independent of the repetition frequency from 100 to 500 Hz. The beam quality factor M2 of the output is 1.03 thanks to the small normalized frequency of the planar waveguide.","PeriodicalId":8093,"journal":{"name":"Applied Physics Express","volume":"2012 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140613013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Single-longitudinal-mode vortex Nd:YVO4 laser using a circular Dammann grating for pump shaping 使用环形达曼光栅进行泵浦整形的单纵模涡旋 Nd:YVO4 激光器
IF 2.3 4区 物理与天体物理
Applied Physics Express Pub Date : 2024-04-17 DOI: 10.35848/1882-0786/ad379b
Jiaxin Song, Junjie Yu, Weilin Cao, Yuefei Li, Dawei Zhang, Jianlang Li
{"title":"Single-longitudinal-mode vortex Nd:YVO4 laser using a circular Dammann grating for pump shaping","authors":"Jiaxin Song, Junjie Yu, Weilin Cao, Yuefei Li, Dawei Zhang, Jianlang Li","doi":"10.35848/1882-0786/ad379b","DOIUrl":"https://doi.org/10.35848/1882-0786/ad379b","url":null,"abstract":"In this research, a 1064 nm single-longitudinal-mode (SLM) vortex beam was generated from an annular-pumped Nd:YVO<sub>4</sub> microchip laser, in which a circular Dammann grating was used to reshape the 808 nm pump light into an annular intensity profile. As a result, the laser emitted a SLM LG<sub>01</sub> beam with a maximum output power of 192 mW. A straightforward technique for producing SLM vortex beams is made available by this work.","PeriodicalId":8093,"journal":{"name":"Applied Physics Express","volume":"28 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140612881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-power, stable single-mode CW operation of 1550 nm wavelength InP-based photonic-crystal surface-emitting lasers 1550 nm 波长 InP 基光子晶体表面发射激光器的高功率、稳定单模 CW 运行
IF 2.3 4区 物理与天体物理
Applied Physics Express Pub Date : 2024-04-17 DOI: 10.35848/1882-0786/ad3cb4
Takeshi Aoki, Yuhki Itoh, Kosuke Fujii, Hiroyuki Yoshinaga, Naoki Fujiwara, Makoto Ogasawara, Yusuke Sawada, Rei Tanaka, Hideki Yagi, Masaki Yanagisawa, Masahiro Yoshida, Takuya Inoue, Menaka De Zoysa, Kenji Ishizaki and Susumu Noda
{"title":"High-power, stable single-mode CW operation of 1550 nm wavelength InP-based photonic-crystal surface-emitting lasers","authors":"Takeshi Aoki, Yuhki Itoh, Kosuke Fujii, Hiroyuki Yoshinaga, Naoki Fujiwara, Makoto Ogasawara, Yusuke Sawada, Rei Tanaka, Hideki Yagi, Masaki Yanagisawa, Masahiro Yoshida, Takuya Inoue, Menaka De Zoysa, Kenji Ishizaki and Susumu Noda","doi":"10.35848/1882-0786/ad3cb4","DOIUrl":"https://doi.org/10.35848/1882-0786/ad3cb4","url":null,"abstract":"1550 nm wavelength photonic-crystal surface-emitting lasers (PCSELs) are attractive for optical communication and eye-safe sensing applications. In this study, we present InP-based PCSELs featuring a double-lattice photonic-crystal structure designed for high-power single-mode operation at a wavelength of 1550 nm. These PCSELs demonstrate output powers exceeding 300 mW under continuous-wave conditions at 25 °C. Additionally, highly stable single-mode oscillation with a side-mode suppression ratio of over 60 dB is verified at temperatures from 15 °C to 60 °C. Measurement and simulation of photonic band structures reveal the impacts of the threshold gain margin and optical coupling coefficient on the single-mode stability.","PeriodicalId":8093,"journal":{"name":"Applied Physics Express","volume":"53 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140612882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diode-pumped 88 fs SESAM mode-locked Tm,Ho:CLNGG laser at 2090 nm 二极管泵浦 88 fs SESAM 模式锁定 2090 纳米 Tm,Ho:CLNGG 激光器
IF 2.3 4区 物理与天体物理
Applied Physics Express Pub Date : 2024-04-04 DOI: 10.35848/1882-0786/ad346b
Anna Suzuki, Yicheng Wang, Sergei Tomilov, Zhongben Pan and Clara J. Saraceno
{"title":"Diode-pumped 88 fs SESAM mode-locked Tm,Ho:CLNGG laser at 2090 nm","authors":"Anna Suzuki, Yicheng Wang, Sergei Tomilov, Zhongben Pan and Clara J. Saraceno","doi":"10.35848/1882-0786/ad346b","DOIUrl":"https://doi.org/10.35848/1882-0786/ad346b","url":null,"abstract":"We report on a passively mode-locked Tm,Ho:CLNGG laser operating at 2090 nm, pumped by a multimode fiber-coupled 793 nm laser diode, representing the first demonstration of a diode-pumped sub-100-fs mode-locked laser at 2.1 μm wavelength. Due to the disordered nature of the gain material that exhibits a broad and smooth gain profile, pulses as short as 88 fs were achieved with an average output power of 120 mW at a repetition rate of 70.3 MHz. Stable self-starting mode-locked operation was obtained using a semiconductor saturable absorber mirror based on the GaSb material system.","PeriodicalId":8093,"journal":{"name":"Applied Physics Express","volume":"94 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140587332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of a method for analyzing the positional correlation of local structures in scanning probe microscopy images using template-matching image-processing method 利用模板匹配图像处理方法开发扫描探针显微镜图像中局部结构位置相关性分析方法
IF 2.3 4区 物理与天体物理
Applied Physics Express Pub Date : 2024-04-02 DOI: 10.35848/1882-0786/ad2784
Sota Tsubokura, Shoya Kawano, Yumiko Imai, Tadashi Ueda, Kei-ichi Nakamoto, Haruo Noma, Hirohisa Hioki and Taketoshi Minato
{"title":"Development of a method for analyzing the positional correlation of local structures in scanning probe microscopy images using template-matching image-processing method","authors":"Sota Tsubokura, Shoya Kawano, Yumiko Imai, Tadashi Ueda, Kei-ichi Nakamoto, Haruo Noma, Hirohisa Hioki and Taketoshi Minato","doi":"10.35848/1882-0786/ad2784","DOIUrl":"https://doi.org/10.35848/1882-0786/ad2784","url":null,"abstract":"The functionalities of materials are governed by the atom type and arrangement, and perturbations caused by defects and adsorbate interactions often significantly alter the behavior of materials. Scanning probe microscopy (SPM) can capture complex interactions caused by the structures on surfaces. It is, however, difficult to analyze such interactions appearing there. In this paper, an image-processing technique that employs template matching to recognize local structures in SPM images and calculate positional correlations is reported. This approach opens new avenues for investigating intricate perturbations in the sciences and provides detailed insights into materials science.","PeriodicalId":8093,"journal":{"name":"Applied Physics Express","volume":"50 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140587331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Temperature dependence of power transfer efficiency and power handling capability of wireless power transfer system using superconducting bulk coil 使用超导散装线圈的无线电力传输系统的功率传输效率和功率处理能力与温度的关系
IF 2.3 4区 物理与天体物理
Applied Physics Express Pub Date : 2024-04-01 DOI: 10.35848/1882-0786/ad346a
Natsuka Oshimoto, Takanori Fujita, Keita Sakuma and Naoto Sekiya
{"title":"Temperature dependence of power transfer efficiency and power handling capability of wireless power transfer system using superconducting bulk coil","authors":"Natsuka Oshimoto, Takanori Fujita, Keita Sakuma and Naoto Sekiya","doi":"10.35848/1882-0786/ad346a","DOIUrl":"https://doi.org/10.35848/1882-0786/ad346a","url":null,"abstract":"We developed a cryocooler system to reveal the temperature dependence of the quality (Q) factor of high-temperature superconducting (HTS) bulk coil and the power transfer efficiency (PTE) and power handling capability (PHC) of a wireless power transfer (WPT) system using the HTS bulk coil. The measured Q factors of the HTS bulk coil were 9051 at 77 K and 14 050 at 25 K. The measured PTEs and PHCs of the WPT system were 44.2% and 4.48 W at 77 K, and 50.8% and 25.2 W at 25 K.","PeriodicalId":8093,"journal":{"name":"Applied Physics Express","volume":"29 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140587536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Temperature- and magnetic field-induced magnetic structural changes in the Fe3Si/FeSi2 superlattice 温度和磁场诱导的 Fe3Si/FeSi2 超晶格磁结构变化
IF 2.3 4区 物理与天体物理
Applied Physics Express Pub Date : 2024-03-22 DOI: 10.35848/1882-0786/ad325f
Takayasu Hanashima, Jun-ichi Suzuki, Kazuhisa Kakurai, Noboru Miyata, Ken-ichiro Sakai, Hiroyuki Deguchi, Yoshiaki Hara, Satoshi Takeichi and Tsuyoshi Yoshitake
{"title":"Temperature- and magnetic field-induced magnetic structural changes in the Fe3Si/FeSi2 superlattice","authors":"Takayasu Hanashima, Jun-ichi Suzuki, Kazuhisa Kakurai, Noboru Miyata, Ken-ichiro Sakai, Hiroyuki Deguchi, Yoshiaki Hara, Satoshi Takeichi and Tsuyoshi Yoshitake","doi":"10.35848/1882-0786/ad325f","DOIUrl":"https://doi.org/10.35848/1882-0786/ad325f","url":null,"abstract":"Artificial lattices with semiconductor spacers are expected to exhibit changes in their magnetic structure owing to the control of their electronic states. The temperature (T) and magnetic-field (Hext) dependence of the in-plane magnetic structure of an [Fe3Si/FeSi2]20 superlattice with a nonmagnetic and semiconducting FeSi2 spacer layer is investigated using magnetization and polarized neutron reflectivity measurements. When Hext = 5 mT, nearly collinear antiferromagnetic (AF) structures are observed from 4 to 298 K. When Hext = 1 T, field-induced fan-like, noncollinear AF structures showing ferromagnetic components along Hext and transverse AF components are observed at low T.","PeriodicalId":8093,"journal":{"name":"Applied Physics Express","volume":"47 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140196660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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