TITLE

Quantitative thermal imaging by synchronous thermoreflectance with optimized illumination wavelengths

AUTHOR(S)
Tessier, G.; Holé, S.; Fournier, D.
PUB. DATE
April 2001
SOURCE
Applied Physics Letters;4/16/2001, Vol. 78 Issue 16, p2267
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Using thermoreflectance microscopy with a camera, we have designed a system which delivers submicronic images of the alternative temperature variations in integrated circuits working in a modulated regime. A careful choice of the illumination wavelength permits us to highlight the heating in chosen parts of the sample and to optimize the thermoreflectance signal. We measure and explain the modifications of the photothermal response which are induced by the presence of a passivation layer. A calibration conducted on various materials with a thermocouple gives access to the absolute alternative temperature variations in integrated circuits working at frequencies between 0.1 Hz (quasipermanent regime) and 5 MHz. © 2001 American Institute of Physics.
ACCESSION #
4715194

 

Related Articles

  • Circuit provides cold-junction compensation. Travis, Bill; Maddox, Mark; Wynne, John // EDN;11/28/2002, Vol. 47 Issue 26, p93 

    Discusses how isothermal termination of the thermocouple wires provides a second 'cold,' or reference junction of hot circuits. Ways to measure the temperature of the cold junction; Necessity of the thermal bonding of the resistance-temperature detectors to the terminal block; Use of a...

  • High power laser-amplifier photonic integrated circuit for 1.48 mum wavelength operation. Koren, U.; Jopson, R.M.; Miller, B.I.; Chien, M.; Young, M.G.; Burrus, C.A.; Giles, C.R.; Presby, H.M.; Raybon, G.; Evankow, J.D.; Tell, B.; Brown-Goebeler, K. // Applied Physics Letters;11/4/1991, Vol. 59 Issue 19, p2351 

    Describes a laser amplifier photonic integrated circuit for wavelength operation. Suitability for pumping erbium doped fiber amplifiers; Measurement of the input and output power for the integrated amplifier; Observation on the near-field and far-field patterns of the device.

  • Highly accurate etching of ridge-waveguide directional couplers using in situ reflectance.... Vawter, G.A.; Klem, J.F.; Hadley, G.R.; Kravitz, S.H. // Applied Physics Letters;1/4/1993, Vol. 62 Issue 1, p1 

    Examines the etching of ridge-waveguide directional couplers. Use of in situ reflectance monitoring; Achievement of accurate etch rate and etch depth; Computation of added loss due to coupling length error; Importance of waveguides in photonic integrated circuits.

  • Rohm for tiny chip LEDs.  // Engineer (00137758);11/8/2002 Supplement, Vol. 291 Issue 7615, p3 

    Introduces Rohm's line of miniature chip light emitting diodes. Features; Applications.

  • An LED's intrinsic capacitance works in a 650-mV LRC circuit.  // EDN;9/8/2011, Vol. 56 Issue 17, p54 

    The article explains the use of the inherent capacitance of a liquid emitting diode (LED) to make a series resonant boost circuit that can create a voltage large enough to light the LED.

  • LM3909 is Not Dead Yet!  // Poptronics;Nov2000, Vol. 1 Issue 11, p45 

    Cites the availability of the LM3909 light emitting diode flasher integrated circuit from major electronics distributors in the United States.

  • Frequently Asked Questions: TEMPERATURE SENSORS. Allan, Roger // Electronic Design;10/20/2005, Vol. 53 Issue 23, p34 

    The article presents questions and answers related to temperature sensors. There are four major types: thermocouples, thermistors, resistance temperature detectors (RTDs), and IC types. The IC types include sensors with analog and digital outputs. Thermocouples are widely used since they're very...

  • DAQ chips simplify sensor interfaces. Prophet, Graham // EDN;3/30/2006, Vol. 51 Issue 7, p34 

    The article introduces the AS8500 and AS8501 chips from austriamicrosystems which can connect a variety of sensors to digital systems. These devices enable one to make direct connect to very-low-level sensor signals, such as low-value current-sense resistors or thermocouples, and operate from a...

  • Challenges and solutions for thermocouple signal conditioning. Austin, John // ECN: Electronic Component News;Jun2015, Vol. 59 Issue 6, p16 

    The article discusses the use of thermocouples in temperature measurements in boilers, ovens and petrochemical applications. It discusses the design and construction of a thermocouple, consisting of metal wires, and mentions the difficulties posed by small voltage signal of the thermocouples. It...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics