physics

John E. Bowers

John E. Bowers is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand John E. Bowers rather than just read about it. In short: John E. Bowers is an American physicist, engineer, researcher and educator.

Key takeaways

John E. Bowers belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect John E. Bowers to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of John E. Bowers from memory before moving on to harder problems.

Reference excerpt

John E. Bowers is an American physicist, engineer, researcher and educator. He is the Fred Kavli Chair in Nanotechnology and the director of the Institute for Energy Efficiency at University of California, Santa Barbara. Bowers' research is focused on silicon photonic integrated circuits for fiber optic communications. He is a member of the National Academy of Engineering, a fellow of the IEEE, OSA, the American Physical Society, and the American Association for the Advancement to Science (AAAS).

Education Bowers received a B.S. in physics from University of Minnesota in 1976. He then received an M.S. in applied physics in 1978 and a Ph.D. in applied physics in 1981, both from Stanford University. After completing his Ph.D., he received his post-doctoral training at Ginzton Laboratory at Stanford University.

Career In 1982, Bowers joined the AT&T Bell Laboratories as a member of the technical staff. In 1987, he left AT&T to join University of California, Santa Barbara as a professor in the department of electrical and computer engineering. Since then, he has worked at UCSB. Bowers has also been involved in founding and managing businesses for commercialization of technology. Bowers co-founded Terabit Technology, which was acquired by Ciena. He later co-founded Calient Networks.

Research and work Bowers has conducted research on high speed lasers, modulators and photodetectors which led to advances in fiber optic system capacities. Bowers' research has also focused on silicon photonics. High speed modulators and photodetectors were also demonstrated in this materials system, but lasers were a major problem due to the inefficient light emission from silicon, which is an indirect bandgap material. Bowers and his students, Alex Fang and Hyundai Park, solved this problem by developing heterogeneous integration of InGaAsP materials on silicon. He then pursued heterogeneous integration of other materials on silicon, such as magnetic materials (YIG), and nonlinear materials (LiNbO3, GaAs). Bowers' later work involves monolithic growth of high gain materials on silicon.

Awards and honors 1996 - LEOS William Streifer Award, IEEE 1996 - Fellow, American Physical Society 2001 - Entrepreneur of the Year Award, South Coast Business and Technology 2002 - Fellow, Optical Society of America 2005 - Member, National Academy of Engineering 2009 - Nick Holonyak, Jr. Award, Optical Society of America 2012 - Tyndall Award, Optical Society of America/IEEE 2016 - Fellow, National Academy of Inventors (NAI) 2017 - IEEE Photonics Award 2018 - Pioneer Award, South Coast Business and Technology 2020 - IEEE Life Fellow 2021 - IPRM Award 2022 - Fellow - American Association for the Advancement to Science (AAAS) 2024 - IEEE Jun-ichi Nishizawa Medal

Selected papers Liu, A. Y.; Srinivasan, S.; Gossard, A.; Norman, J.; Bowers, J. E. (2015-10-01). "Quantum dot lasers for silicon photonics". Photonics Research (Invited paper). 3 (5): B1–B9. doi:10.1364/PRJ.3.0000B1. Jung, D.; Zhang, Z.; Norman, J.; Herrick, R.; Kennedy, M. J.; Patel, P.; Turnlund, K.; Jan, C.; Wan, Y.; Gossard, A.; Bowers, J. E. (2017-12-18). "Highly reliable low threshold InAs quantum dot lasers on on-axis (001) Si with 87% injection efficiency". ACS Photonics. 5 (3): 1094–1100. doi:10.1021/acsphotonics.7b01387. Norman, J. C.; Jung, D.; Wan, Y.; Bowers, J. E. (2018-03-27). "Perspective: The Future of Quantum Dot Photonic Integrated Circuits". APL Photonics (Invited paper). 3 (3): 030901. Bibcode:2018APLP....3c0901N. doi:10.1063/1.5021345. Liu, A. Y.; Bowers, J. E. (2018-07-09). "Photonic Integration with Epitaxial III-V on Silicon". IEEE Journal of Selected Topics in Quantum Electronics (Invited paper). 24 (6): 6000412. Bibcode:2018IJSTQ..2454542L. doi:10.1109/JSTQE.2018.2854542. Xiang, C.; Liu, J.; Guo, J.; Chang, L.; Wang, R. N.; Weng, W.; Peters, J.; Xie, W.; Zhang, Z.; Riemensberger, J.; Selvidge, J.; Kippenberg, T. J.; Bowers, J. E. (2021). "Laser soliton microcombs heterogeneously integrated on silicon". Science. 373 (6550): 99–103. arXiv:2103.02725. Bibcode:2021Sci...373...99X. doi:10.1126/science.abh2076. PMID 34210884.

Illustrations

Worked examples

Example 1 — a first encounter with John E. Bowers

Start with the simplest possible case. Write down what John E. Bowers claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to John E. Bowers before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about John E. Bowers ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of John E. Bowers

In research: John E. Bowers appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses John E. Bowers in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: John E. Bowers is common in secondary-school and first-year university syllabi. It links to neighbouring topics 20th-century American engineers, 20th-century American physicists, 21st-century American engineers, so understanding it makes those chapters shorter.
In everyday life: Look for John E. Bowers outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study John E. Bowers in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what John E. Bowers means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain John E. Bowers out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is John E. Bowers in simple terms?

John E. Bowers is an American physicist, engineer, researcher and educator.

Why does John E. Bowers matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study John E. Bowers?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on John E. Bowers.