Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Harshil Dave"'
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 25:1-8
We report progress on phased 850 nm vertical-cavity surface-emitting laser arrays that can be designed to operate reliably through control of individual injection current to each laser element. In this manner, nearly all fabricated arrays can be bias
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::768a81be4fd30e73dfdd43912ec79a8f
https://doi.org/10.1109/jstqe.2019.2917551
https://doi.org/10.1109/jstqe.2019.2917551
Autor:
Alan E. Willner, Zihe Gao, Stewart T. M. Fryslie, Kent D. Choquette, Harshil Dave, Peicheng Liao, Bradley J. Thompson
Publikováno v:
IEEE Photonics Technology Letters. 31:173-176
We experimentally demonstrated enhanced digital modulation of coherently coupled vertical-cavity surface-emitting laser arrays. Mutually coherent behavior of $2\times 1$ proton-implanted index-confined photonic crystal vertical-cavity phased laser ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::016c2cc8b65741b8c701bd6b14e890bb
https://doi.org/10.1109/lpt.2018.2888806
https://doi.org/10.1109/lpt.2018.2888806
Autor:
Pawel Strzebonski, Harshil Dave, Kent D. Choquette, Nusrat Jahan, Katherine Lakomy, William North
Publikováno v:
Vertical-Cavity Surface-Emitting Lasers XXV.
Coherent optical coupling in VCSEL arrays introduces novel and desirable behaviors that can manifest themselves in many ways. We explore some of these behaviors using common characterization techniques but using large datasets, and show how we use co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6454d290fe4fa574efc41bd6ad40fc2
https://doi.org/10.1117/12.2585066
https://doi.org/10.1117/12.2585066
Publikováno v:
OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP).
We integrate a projection system and camera into a structured-illumination capable telescope that generates enhanced-resolution images of moving targets at inter- mediate range using incoherent Fourier ptychography. The resolution exceeds that of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a06da7b0eb785b8e5ff4a39d5691c96
https://doi.org/10.1364/cosi.2021.cw6b.2
https://doi.org/10.1364/cosi.2021.cw6b.2
Publikováno v:
OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP).
A deep learning network for wavefront reconstruction based on intensity and slopes information (ISNet) is further improved by using realistic noise to generate a con- volutional neural net model for accurate centroiding and slopes calculation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ad9b1579cf93b6b7bbb4ca8fc877d0b
https://doi.org/10.1364/pcaop.2021.pf1c.6
https://doi.org/10.1364/pcaop.2021.pf1c.6
Publikováno v:
OSA Advanced Photonics Congress (AP) 2020 (IPR, NP, NOMA, Networks, PVLED, PSC, SPPCom, SOF).
Coherently coupled 2-element laser diode arrays near the modal exceptional point have equal photon-photon and carrier-photon resonances with indistinguishable supermodes. Experimentally the relative intensity noise is suppressed near the exceptional
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43424c43b8677fd7300c1c17270e10f7
https://doi.org/10.1364/np.2020.npw2e.5
https://doi.org/10.1364/np.2020.npw2e.5
Publikováno v:
Conference on Lasers and Electro-Optics.
Laser array dynamics of coupled microcavity laser arrays operated near a modal exceptional point is studied using coupled laser rate equations. Tuning the laser array near exceptional point results in rejection of common-mode interference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c304549f931a1a85491b6358f5a3354
https://doi.org/10.1364/cleo_at.2020.jtu2c.6
https://doi.org/10.1364/cleo_at.2020.jtu2c.6
Autor:
Bradley J. Thompson, Kent D. Choquette, Zihe Gao, Katherine Lakomy, Stewart T. M. Fryslie, Harshil Dave, David K. McElfresh, Jose E. Schutt-Aine, Shiyun Lin, Patrick J. Decker
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 23:1-9
The modulation properties of two-element photonic crystal ion-implanted coherently coupled vertical cavity surface emitting laser arrays emitting at 850 nm are reported. Single mode emission into either the in-phase or out-of-phase supermode and sign
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80490b412ed8ddaa20469ba6ae2c9c7a
https://doi.org/10.1109/jstqe.2017.2699630
https://doi.org/10.1109/jstqe.2017.2699630
Publikováno v:
2019 IEEE Photonics Conference (IPC).
When operated in the coherently coupled regime, microcavity laser diode arrays have an electrical signature in their differential series resistance. The mechanism of this effect is explained using a complex coupling coefficient in coupled mode rate e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bfd38452c8d2711e41eec91427a919a
https://doi.org/10.1109/ipcon.2019.8908527
https://doi.org/10.1109/ipcon.2019.8908527
Publikováno v:
2019 IEEE Photonics Conference (IPC).
Bandwidth enhancement in phased laser arrays is explained using small-signal frequency-domain analysis on coupled mode rate equations. In-phase modulation of asymmetric arrays produces bandwidth enhancement in agreement with experimental measurements
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6debc0c0eeb727cc5767dafb95cb4d0b
https://doi.org/10.1109/ipcon.2019.8908356
https://doi.org/10.1109/ipcon.2019.8908356