Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Brahm Pal Singh"'
Publikováno v:
Optical Review. 12:345-351
High precision assembly of laser diodes (LDs) on silicon wafer substrates for use in advanced optoelectronic devices is an important issue from a mass production point of view. An acceptable alternative to replace an obsolete pick and place flip chip
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec7a8fcdb94ee8fb23497fc9595405f1
https://doi.org/10.1007/s10043-005-0345-y
https://doi.org/10.1007/s10043-005-0345-y
Autor:
Brahm Pal Singh
Publikováno v:
Applied Surface Science. 150:95-100
In this article, I report in-situ thin film growth and etching measurement and control with ultra high precision. A stack of thin film layers of AlAs/Al0.1Ga0.9As to form Bragg reflector for the surface emitting semi-conductor laser was grown by gas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35ae80458b4c5253e889eab266a79392
https://doi.org/10.1016/s0169-4332(99)00227-5
https://doi.org/10.1016/s0169-4332(99)00227-5
Publikováno v:
Applied Surface Science. :841-844
Accurate in-situ molecular beam epitaxial growth of vertical cavity surface emitting lasers on a rotating GaAs wafer is demonstrated using inclined incident He–Ne laser reflectometry. A sinusoidal intensity variation signal is observed in the refle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a5b99c07f70ed4da09a4ad4ee2943fb
https://doi.org/10.1016/s0169-4332(98)00163-9
https://doi.org/10.1016/s0169-4332(98)00163-9
Publikováno v:
The Review of Laser Engineering. 24:413-420
In this paper, characteristics of amplitude modulated harmonically mode locked (AM-HML) erbium doped fiber (EDF) ring laser are presented. It is investigated that the AM-HML method can provide a precise control of the lasing spectral bandwidth. Which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da554b920cbdbdcfa4efe3d830029de2
https://doi.org/10.2184/lsj.24.413
https://doi.org/10.2184/lsj.24.413
Autor:
Rina Sharma, Alok K. Kanjilal, Jun Yamada, Ram Narain, Y. Uchida, Jingnan Liu, Brahm Pal Singh, Vijay Trimbak Chitnis
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 44:806-809
In this paper we propose a two step approach for obtaining coarse and fine alignment without using a microscope. The new approach Is based on moire technique. The alignment marks on the mask and the wafer are in the form of coarse and fine gratings.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8de0d11676e6b99f85f1f1ecad7628b
https://doi.org/10.1109/19.387338
https://doi.org/10.1109/19.387338
Autor:
Tomoaki Tojo, Kazutoshi Onozawa, Koichi Maezawa, Ikuo Soga, Kazuhiko Yamanaka, Takashi Mizutani, Daisuke Ueda, Brahm Pal Singh
Publikováno v:
Extended Abstracts of the 2004 International Conference on Solid State Devices and Materials.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc0d58ae35671f8d1a5696578ebd3fac
https://doi.org/10.7567/ssdm.2004.h-9-5
https://doi.org/10.7567/ssdm.2004.h-9-5
Publikováno v:
Optics & Laser Technology. 27:275-277
A novel method to suppress the noise in harmonically mode-locked lasers, which relies on a coherent-phase relationship among all groups of the axial modes, is reported. An optical amplitude modulator, driven by the harmonic signal (up to ~2 GHz) with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ded986d09cb31d8acd8e2f0d0c3daa9
https://doi.org/10.1016/0030-3992(95)93757-i
https://doi.org/10.1016/0030-3992(95)93757-i
Autor:
Toshio Goto, Brahm Pal Singh, Alok K. Kanjilal, Yoshiyuki Uchida, Ram Narain, Jingnan Liu, Rina Sharma, Vijay Trimbak Chitnis
Publikováno v:
Review of Scientific Instruments. 66:2658-2660
An automatic tracking of the angular alignment position of mask with respect to the wafer in a photolithographic mask aligner is reported. It is demonstrated that automatic dynamic control with very high accuracy and stability of the angular alignmen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d58eed57e4a7e13e61344c2f5464cb0
https://doi.org/10.1063/1.1145605
https://doi.org/10.1063/1.1145605
Publikováno v:
Quality Measurement: The Indispensable Bridge between Theory and Reality (No Measurements? No Science! Joint Conference - 1996: IEEE Instrumentation and Measurement Technology Conference and IMEKO Technical Committee 7. Conference Proceedings.
The characteristics of amplitude modulated harmonically mode locked (AM-HML) erbium doped fiber (EDF) ring laser are reported. It is investigated that the AM-HML method can provide a precise control of the lasing spectral bandwidth. The optical spect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93de18bd1c56a9dde0359d2dc5480899
https://doi.org/10.1109/imtc.1996.507365
https://doi.org/10.1109/imtc.1996.507365
Publikováno v:
SPIE Proceedings.
We report the experimental and theoretical results for high reflectivity (>99% at 850 nm) AlAs/AlGaAs distributed Bragg reflectors (DBR) for vertical cavity surface emitting semiconductor lasers (VCSEL). It is investigated that up to ± 10% deviation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be126c5dac04e7b5431d933f32947ee4
https://doi.org/10.1117/12.345361
https://doi.org/10.1117/12.345361