A filter for electromagnetic radiation including one or more dielectric spacer regions and one or more reflective regions integrated on a semiconductor substrate, the semiconductor substrate including a semiconductor photodetector, such that the filter transmits ultraviolet radiation to the semiconductor photodetector, the ultraviolet radiation having a range of wavelengths, and the filter suppresses transmission of electromagnetic radiation, having wavelengths outside the range of wavelengths, to the semiconductor photodetector.
- Pasadena CA, US John Hennessy - Los Angeles CA, US David Hitlin - Los Angeles CA, US
International Classification:
G01T 1/24 H01L 27/146 G01T 1/20
Abstract:
A scintillation detector, including a scintillator that emits scintillation; a semiconductor photodetector having a surface area for receiving the scintillation, wherein the surface area has a passivation layer configured to provide a peak quantum efficiency greater than 40% for a first component of the scintillation, and the semiconductor photodetector has built in gain through avalanche multiplication; a coating on the surface area, wherein the coating acts as a bandpass filter that transmits light within a range of wavelengths corresponding to the first component of the scintillation and suppresses transmission of light with wavelengths outside said range of wavelengths; and wherein the surface area, the passivation layer, and the coating are controlled to increase the temporal resolution of the semiconductor photodetector.
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John Hennessy
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University College Cork - Electrical and Electronic Engineer, Presentation Brothers College, Cork
John Hennessy
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University of Ottawa, Wilfrid Laurier University
John Hennessy
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We are a New Media Marketing company, specialising in Film & Video Production. We have experience in producing web virals and commercials, corporate communications, product showcases & live ev...
it providing an incorrect response to a question about the James Webb Space Telescope. The stock declined by more than 9% in the day after the mistake got attention, and Alphabet's chairman, John Hennessy, said that Google was hesitant to use Bard in a product as it "really ready," according to CNBC.
Date: Feb 15, 2023
Category: Technology
Source: Google
Dow futures down triple digits on Wall Street ahead of key jobs report
shy of estimates, although the Google parent's revenue did beat forecasts. Its core advertising business did continue to perform strongly during the quarter. Separately, the company named current director and former Stanford University president John Hennessy as its chairman, replacing Eric Schmidt.
Date: Feb 02, 2018
Category: Business
Source: Google
Alphabet Profit Falls Short on Google's Ad, Marketing Costs
The company also named director John Hennessy as chairman, replacing Eric Schmidt, who said in December he would step down from the role. Schmidt remains on the board. Alphabet also said it authorized a share buyback of $8.6 billion of its stock.
Date: Feb 01, 2018
Category: Business
Source: Google
Alphabet's earnings miss profit estimates as spending grows
Alphabet also said on Thursday that veteran board member John Hennessy took over as chairman the day before from Eric Schmidt, a long-time Google executive who will remain a board member and technical adviser.
Date: Feb 01, 2018
Category: Business
Source: Google
Eric Schmidt leaving Executive Chairman post at Alphabet to become "technical advisor"
iding our Board, particularly as we restructured from Google to Alphabet. Hell now be able to bring that same focus and energy to his other passions, while continuing to advise Alphabet, said John Hennessy, a member of Alphabets Board since 2004 and the lead independent director since 2007.
dustry in ways that benefit the nations economic and security interests. The group which includes academics like John Hennessy, president emeritus at Stanford University, as well as private-sector executives like Paul Otellini, former president and CEO of Intel is designed to promote U.S. leaders
Date: Nov 02, 2016
Category: Business
Source: Google
Stanford's ban on large containers of hard alcohol sparks debate about sexual assault
In March, Stanfords president, John Hennessy, wrote in a letter to students that hard alcohol is implicated in a variety of problems that continue to be present in the Stanford community, including alcohol poisoning, sexual assault and relationship violence.
Date: Aug 24, 2016
Category: U.S.
Source: Google
Read President Obama's Remarks on 'Brexit' and Globalization
just stick around longer than my term limit. John, Im sure there are some people who want you to stick around longer, but Ive Im confident that youre going to do extraordinary things and we could not be prouder of John Hennessy and Stanford and all the great work that they have done.