On-chip infrared sensors: redefining the benefits of scaling

Derek Kita; Hongtao Lin; Anu Agarwal; Anupama Yadav; Kathleen Richardson; Igor Luzinov; Tian Gu; Juejun Hu

doi:10.1117/12.2250237

17 April 2017 On-chip infrared sensors: redefining the benefits of scaling

Derek Kita, Hongtao Lin, Anu Agarwal, Anupama Yadav, Kathleen Richardson, Igor Luzinov, Tian Gu, Juejun Hu

Proceedings Volume 10081, Frontiers in Biological Detection: From Nanosensors to Systems IX; 100810F (2017) https://doi.org/10.1117/12.2250237
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

Infrared (IR) spectroscopy is widely recognized as a gold standard technique for chemical and biological analysis. Traditional IR spectroscopy relies on fragile bench-top instruments located in dedicated laboratory settings, and is thus not suitable for emerging field-deployed applications such as in-line industrial process control, environmental monitoring, and point-of-care diagnosis. Recent strides in photonic integration technologies provide a promising route towards enabling miniaturized, rugged platforms for IR spectroscopic analysis. It is therefore attempting to simply replace the bulky discrete optical elements used in conventional IR spectroscopy with their on-chip counterparts. This size down-scaling approach, however, cripples the system performance as both the sensitivity of spectroscopic sensors and spectral resolution of spectrometers scale with optical path length. In light of this challenge, we will discuss two novel photonic device designs uniquely capable of reaping performance benefits from microphotonic scaling. We leverage strong optical and thermal confinement in judiciously designed micro-cavities to circumvent the thermal diffusion and optical diffraction limits in conventional photothermal sensors and achieve a record 104 photothermal sensitivity enhancement. In the second example, an on-chip spectrometer design with the Fellgett’s advantage is analyzed. The design enables sub-nm spectral resolution on a millimeter-sized, fully packaged chip without moving parts.

Conference Presentation

Citation Download Citation

Derek Kita, Hongtao Lin, Anu Agarwal, Anupama Yadav, Kathleen Richardson, Igor Luzinov, Tian Gu, and Juejun Hu "On-chip infrared sensors: redefining the benefits of scaling", Proc. SPIE 10081, Frontiers in Biological Detection: From Nanosensors to Systems IX, 100810F (17 April 2017); https://doi.org/10.1117/12.2250237

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available