Zobrazeno 1 - 10
of 177
pro vyhledávání: '"Cunzhu Tong"'
Autor:
Ziye Wang, Xia Liu, Pinyao Wang, Huanyu Lu, Bo Meng, Wei Zhang, Lijie Wang, Yanjing Wang, Cunzhu Tong
Publikováno v:
Light: Science & Applications, Vol 13, Iss 1, Pp 1-8 (2024)
Abstract Benefitting from narrow beam divergence, photonic crystal surface-emitting lasers are expected to play an essential role in the ever-growing fields of optical communication and light detection and ranging. Lasers operating with 1.55 μm wave
Externí odkaz:
https://doaj.org/article/ac1f515c810e4e9aac09dcfe8ace9b69
Publikováno v:
IEEE Photonics Journal, Vol 15, Iss 2, Pp 1-5 (2023)
We present the design, fabrication, and performance of high-speed oxide-confined 1030 nm vertical-cavity surface-emitting lasers (VCSELs) with a short anti–waveguiding optical cavity. By using a half-wavelength cavity to enhance the limit of the op
Externí odkaz:
https://doaj.org/article/16df1d885f9646a2b09357f893237ff4
Autor:
Jian Feng, Bo Meng, Cunzhu Tong, Andreas Popp, Berthold Schmidt, Lijie Wang, Huanyu Lu, Yanjing Wang, Xin Zhang, Lijun Wang
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 5, Pp 1-7 (2022)
We report an in-well and barrier coupling pump scheme of semiconductor disk laser (SDL). An in-well-absorbed (940 nm) and a barrier-absorbed (808 nm) pump source were used to measure laser output characteristics. The output power of the coupling pump
Externí odkaz:
https://doaj.org/article/152cb4e6cb9944d0ac31aceea396a878
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 5, Pp 1-8 (2022)
Q-switching in a mode-locked laser not only makes the amplitude of every single output pulse unequal, but also limits the time width and peak power of output pulses. This paper investigates the Q-switching in a self-mode-locked semiconductor disk las
Externí odkaz:
https://doaj.org/article/f7826b11c879443abbc436c13b231e3d
Autor:
Jian Feng, Bo Meng, Jinming Shang, Xin Zhang, Cunzhu Tong, Yu Zhang, Zhichuan Niu, Lijun Wang
Publikováno v:
Applied Sciences, Vol 13, Iss 12, p 6873 (2023)
We present a mode−locked GaSb−based optically pumped semiconductor disk laser operating at 2 µm based on the self−mode−locked mechanism. Using the delay differential equation model, we discuss the influence of cavity length on the stability
Externí odkaz:
https://doaj.org/article/8e1269dfdea842d4a81c25447dc4836d
Autor:
Yihang Chen, Chengao Yang, Tianfang Wang, Hongguang Yu, Jianmei Shi, Xiangbin Su, Yu Zhang, Youwen Zhao, Cunzhu Tong, Donghai Wu, Yingqiang Xu, Haiqiao Ni, Zhichuan Niu
Publikováno v:
Applied Sciences, Vol 13, Iss 9, p 5506 (2023)
We propose a novel graded AlGaAsSb layer growth method to achieve a super-linear interface by precisely controlling the cell temperature and valve position. Atomically smooth surface and lattice-matched epitaxy was confirmed by AFM and the HRXRD char
Externí odkaz:
https://doaj.org/article/ab0bca53658a42849b6d8352bc307a68
Publikováno v:
Applied Sciences, Vol 13, Iss 4, p 2125 (2023)
A beam combining method to improve the brightness of diode lasers is proposed based on a V-shaped external cavity spectral beam and beam-waist splitting polarization combination. This design has the outstanding advantages of improving the beam qualit
Externí odkaz:
https://doaj.org/article/4a768b46bc8a41e8b9c25850d6e4f363
Publikováno v:
Photonics, Vol 9, Iss 11, p 859 (2022)
Self-mode-locked semiconductor disk lasers possess compact resonant cavity and stable construction. These devices have a wide application prospect because of their picosecond to sub-picosecond pulse width, excellent beam quality and tailorable emissi
Externí odkaz:
https://doaj.org/article/9c6db629ab4046f19d6479e54d6306fd
Publikováno v:
Applied Sciences, Vol 12, Iss 20, p 10581 (2022)
Photonic-crystal surface-emitting lasers (PCSELs) have led to amazing results in overcoming the divergence limitation of semiconductor lasers. However, so far, the physical mechanism behind this promising control of far-field characteristics is still
Externí odkaz:
https://doaj.org/article/c7997590e9ad4546b14db22a1b729c83
Publikováno v:
Applied Sciences, Vol 12, Iss 18, p 9168 (2022)
We experimentally demonstrate a passively Q-switched wavelength tunable 2.8 μm erbium-doped fiber laser. Fe3O4 nanoparticles deposited on a gold mirror are used as a saturable absorber (SA). Stable Q-switched pulses within the tunable range of 2710
Externí odkaz:
https://doaj.org/article/c7118f540bbe4083a1395a31906528c0