PROFILE:
Chris Chua
As a principal scientist at PARC, Christopher Chua is the technical principal investigator for the team developing semiconductor optical emitters -- light-emitting diodes (LEDs) and lasers. He is currently focusing on epitaxy, design, and fabrication of nitride-based visible and ultra-violet LEDs and laser diodes.
At PARC, Christopher designed and built the world's most densely packed vertical cavity surface-emitting laser (VCSEL) arrays, and pioneered a VCSEL architecture that is currently used by leading manufacturers. He also conceptualized a new type of micro-machined (MEMs) inductor, and worked with a team to demonstrate world-record integrated circuit oscillator Q-factors utilizing this device.
Dr. Chua earned his Ph.D. in Electrical Engineering from Cornell University, and a B.S. in Physics as well as a B.S. in Electrical Engineering from the Massachusetts Institute of Technology (M.I.T.). He has authored numerous technical papers in leading scientific journals, including co-authoring papers that won the best paper award at the 2003 ISSCC (International Solid State Circuit Conference) and at the 2009 IMAPS (International Microelectronics and Packaging Society). Christopher holds more than 60 U.S. patents.
PARC publications
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2013
Studies of hole transport in Mg-doped AlGaN layers for deep-ultraviolet light emitters
SPIE Photonics West
7 February 2013
2012
9th International Symposium on Semiconductor Light Emitting Devices
23 July 2012
Towards sub-300 nm AlGaN laser diodes on bulk AlN substrates
Spring Meeting of the German Physical Society
24 March 2012
Applied Physics Letters
9 January 2012
2011
Applied Physics Letters
2011
Towards sub-300 nm laser diodes on bulk AlN substrates
International Semiconductor Device Research Symposium
7 December 2011
Pseudomorphically grown ultraviolet C photopumped lasers on bulk AlN substrates
Applied Physics Express
10 August 2011
Optically pumped UV lasers grown on bulk AlN substrates
International Conference on Nitride Semiconductors
12 July 2011
Sub-300 nm UV LEDs with defect reduction layer and vertical-injection architecture
CLEO 2011
1 May 2011
AlGaN-based ultraviolet lasers - applications and materials challenges
Invited talk at CLEO 2011
1 May 2011
Invited talk at Gallium Nitride Materials & Devices VI, SPIE Photonics West 2011
24 January 2011
Optical polarization of UV-A and UV-B (In)(Al)GaN multiple quantum well light emitting diodes
Gallium Nitride Materials & Devices VI at SPIE Photonics West 2011
22 January 2011
Advances in group III-nitride-based deep UV light-emitting diode technology
Semiconductor Science & Technology
January 2011
2010
Applied Physics Letters
25 October 2010
Optically-pumped lasing of semipolar InGaN/GaN(1122) heterostructures
physica status solidi (c)
July 2010
Nitride laser diodes with non-epitaxial cladding layers
IEEE Photonics Technology Letters
March 2010
Lasing of semi-polar InGaN/GaN(1122) heterostructures grown on m-plane sapphire substrates
SPIE Photonics West 2010: Novel In-Plane Semiconductor Lasers IX
25 January 2010
2009
Microspring characterization and flip chip assembly reliability
Best Paper Award at IMAPS 2009
1 November 2009
Metal-clad nitride semiconductor laser diodes
8th International Conference on Nitride Semiconductors
22 October 2009
Optically-pumped lasing of semipolar InGaN/GaN(1122) heterostructures
International Conference on Nitride Semiconductors (ICNS 8)
2009 October 18
Wafer level packaging with soldered stress engineered micro-springs
IEEE Transactions on Advanced Packaging
May 2009
2008
2006
Pressure contact micro-springs in small pitch flip-chip packages
IEEE Transactions on Components and Packaging Technologies
December 2006
2005
Solder-free pressure contact micro-springs in high-density flip-chip packages
55th Electronic Components and Technology Conference
31 May 2005
Chip on glass bonding using StressedMetal™ Technology
2005 SID International Symposium Digest of Technical Papers
24 May 2005
2004
Hybrid integration of GaAs-based VCSEL array with amorphous silicon sensor
IEEE Electron Device Letters
1 June 2004
2003
Out-of-plane high Q inductors on low resistance silicon
Journal of Microelectromechanical Systems
30 December 2003
12th International Conference on Solid-State Sensors, Actuators, and Microsystems (Transducers '03)
10 June 2003
Intermittency study of a stressed-metal micro-spring sliding electrical contact
Electronic Components and Technology Conference
29 May 2003
Low-noise monolithic oscillator with an integrated three-dimensional inductor
IEEE International Solid-State Circuits Conference (2003 ISSCC)
9 February 2003
High-Q RF coils on silicon integrated circuits
MEMS Components and Applications for Industry, Automobiles, Aerospace and Communication II
28 January 2003
2002
Self-assembled out-of-plane high-Q integrated inductors
IEEE International Electron Devices Meeting Technical Digest
8 December 2002
Fabrication of highly conductive micro-springs and their use as sliding-contact interconnects
Micro- and Nanoengineering Conference 2002
16 September 2002
On-chip out-of-plane high-Q inductors
IEEE Lester Eastman Conference on High Performance Devices
6 August 2002
Self-assembled out-of-plane high Q inductors
Solid State Sensor, Actuator and Microsystems Workshop
2 June 2002
Densely-packed optoelectronic interconnect using micro-machined springs
IEEE Photonics Technology Letters
1 June 2002
2001
Compliant cantilevered spring interconnects for flip-chip packaging
Proceedings of the 51st Electronic Components and Technology Conference (ECTC)
29 May 2001
2000
Nano-spring arrays for high density interconnect
SPIE Micromachined Devices and Components VI
19 September 2000
1999
Laterally-oxidized vertical cavity lasers with stable polarization
SPIE Optoelectronics '99
28 January 1999
Densely-packed surface-emitting laser arrays for printing applications
SPIE Optoelectronics '99
28 January 1999
1998
Wafer fusion of infrared diodes to GaN light emitting heterostructures
IEEE Photonics Technology Letters
1 November 1998
Anisotropic apertures for polarization-stable laterally-oxidized vertical-cavity lasers
Applied Physics Letters
21 September 1998
810 nm linear vertical cavity laser arrays on 3 micron pitch
6th Annual Device Research Conference Digest
22 June 1998
Buried oxide vertical-cavity surface-emitting laser arrays with transparent top electrodes
Conference on Lasers and Electro-Optics
3 May 1998
Low-threshold in AlGaAs vertical cavity suface-emitting laser arrays using transparent contacts.
Applied Physics Letters
2 March 1998
1997
Phase separation in InGaN/GaN multiple quantum wells
Materials Research Society Symposium
1 December 1997
Phase separation in annealed InGaN multiple quantum wells
International Conference on Nitride Semiconductors
27 October 1997
IEEE Photonics Technology Letters
8 August 1997
Conference on Lasers and Electro-Optics
18 May 1997
IEEE Photonics Technology Letters
1 May 1997
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related focus areas
related competencies
- optoelectronics
- semiconductors
events
view all 
Studies of Hole Transport in Mg-doped AlGaN Layers for Deep Ultraviolet Light Emitters
7 February 2013 | San Francisco, CA
SPIE Photonics West - visit PARC's booth
5 February 2013 - 7 February 2013 | San Francisco, CA
Mid-UV AlGaN Lasers on Bulk AlN Substrates
16 October 2012 | Sapporo, Japan