Zobrazeno 1 - 10
of 25 769
pro vyhledávání: '"laser diode"'
Publikováno v:
Majallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Īlām, Vol 32, Iss 2, Pp 98-104 (2024)
Introduction: Laser treatment has been highly regarded for removing root canal microorganisms, which are the main causes of treatment failure. This study aimed to assess the effect of 810/980 nm diode laser irradiation on the reduction of Candida alb
Externí odkaz:
https://doaj.org/article/13206f69e3884ae2943a11b6dc4a0ba0
Autor:
Eduard Kuhn
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 2, Pp 1-8 (2024)
In this publication a new approach to simulate the mode dynamics in broad-ridge laser diode is presented. These devices exhibit rich lateral mode dynamics in addition to longitudinal mode dynamics observed in narrow-ridge laser diodes. The mode dynam
Externí odkaz:
https://doaj.org/article/e6bc7d1d4c3e4c1a8085057df196e14d
Autor:
Yuelong Ma, Xingcan Li, Lan Wu, Chenyang Shao, Boqiang Zhang, Tao Pang, Lili Lu, Hui Qiu, Ye Tian, Guilu Wang, Yanbo Hui, Qianwen Guo, Daqin Chen
Publikováno v:
Journal of Advanced Ceramics, Vol 13, Iss 3, Pp 354-363 (2024)
Near-infrared (NIR) phosphor-converted light-emitting diodes/laser diodes (LEDs/LDs) are prospective lighting sources for NIR spectroscopy. However, developing NIR phosphor materials with desired thermal robustness and high photoelectric efficiency i
Externí odkaz:
https://doaj.org/article/b06d6ce2bd56405fba481604f5407b52
Autor:
I. Hasan Sulieman, M. Sayem El-daher
Publikováno v:
Syrian Journal for Science and Innovation, Vol 2, Iss 2 (2024)
Thermal effects formed in a solid-state laser crystal, which cause the appearance of thermal lensing، mechanical stress and birefringence, lead to laser beam distortion and shorten the lifetime of laser crystal، and hinder getting a high-quality la
Externí odkaz:
https://doaj.org/article/62397b554eae42e1a364c720e2708e67
Publikováno v:
IEEE Open Journal of Industry Applications, Vol 5, Pp 455-468 (2024)
High-power laser diodes (LDs) are used in various military, medical, and industrial applications. In this article, the unique driving requirements of a high power pulsed LD array have been presented, and the required converter architecture has been d
Externí odkaz:
https://doaj.org/article/51738cfea07d422d8d79aabc0f081aea
Autor:
Fuyi Cao, Dongxin Jiang, Yuejun Liu, Yunpeng Tian, Xu Ran, Yisu Long, Takashi Ito, Xiaobo Hu, Guoen Weng, Hidefumi Akiyama, Shaoqiang Chen
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 1, Pp 1-8 (2024)
High precision time-of-flight based light detection and ranging (LiDAR) system needs compact ultrafast pulsed lasers, such as gain-switched semiconductor laser diodes, which have the advantages of low cost, small size, and mass-producible, for short
Externí odkaz:
https://doaj.org/article/58863d272c6c46e3a09aab03105141d3
Autor:
Satoshi Ebisawa
Publikováno v:
Photonics, Vol 11, Iss 10, p 954 (2024)
In a laser diode (LD) system with optical injection, the effects of gain saturation of the LD on the orbital instability of the system are analyzed numerically. For the optical injection LD system without signal application, it is shown that the effe
Externí odkaz:
https://doaj.org/article/8dc64b86a41a4d3c8ff4cbad7cb141ac
Publikováno v:
Applied Sciences, Vol 14, Iss 20, p 9557 (2024)
The pulse laser emission circuit plays a crucial role as the emission unit of time-of-flight (TOF) LiDAR. This paper proposes a nanosecond-level pulse laser diode array drive circuit for LiDAR, primarily aimed at addressing the issue of high-speed sc
Externí odkaz:
https://doaj.org/article/af11ce00f10d4762b939baed6fade1a3
Publikováno v:
Photonics, Vol 11, Iss 10, p 912 (2024)
We propose and experimentally demonstrate an approach for generating a wideband optical frequency comb (OFC) featuring multiple comb lines and wavelength tunability based on a gain-switched weak-resonant-cavity Fabry–Perot laser diode (WRC-FPLD) un
Externí odkaz:
https://doaj.org/article/edf20518d83c4b84ab971dc0d2aac52a
Autor:
Muhammed Aktas, Szymon Grzanka, Łucja Marona, Jakub Goss, Grzegorz Staszczak, Anna Kafar, Piotr Perlin
Publikováno v:
Materials, Vol 17, Iss 18, p 4502 (2024)
This work reports on the possibility of sustaining a stable operation of polarization-doped InGaN light emitters over a particularly broad temperature range. We obtained efficient emission from InGaN light-emitting diodes between 20 K and 295 K and f
Externí odkaz:
https://doaj.org/article/ff6ce8f0e8454dba8534336057b4e570