Photothermal displacement spectroscopy: An optical probe for solids and surfaces

Olmstead, Marjorie A.; Amer, Nabil M.; Kohn, S.; Fournier, D.; Boccara, A. C.

doi:10.1007/bf00616610

Cited by 318 publications

(87 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is also possible to separate surface and bulk contributions through the phase of the photothermal signal. 3 The phase was observed to change smoothly from that of a surface absorptic;m to the later arrival of the bulk signal between soac and 100°C. A vector separation of the two components was found to be consistent with the polarization data shown in Fig.…”

Section: N Experimental Resultsmentioning

confidence: 91%

Polarization Dependent Ge and Si (111)2x1 Surface State Optical Absorption: A Test of surface Reconstruction Models

Olmstead

Amer

1985

Proceedings of the 17th International Conference on the Physics of Semiconductors

View full text Add to dashboard Cite

Section: N Experimental Resultsmentioning

confidence: 91%

Polarization Dependent Ge and Si (111)2x1 Surface State Optical Absorption: A Test of surface Reconstruction Models

Olmstead

Amer

1985

Proceedings of the 17th International Conference on the Physics of Semiconductors

View full text Add to dashboard Cite

“…The photothermal deflection (PTD) technique appears suited for this absorptance application [1][2][3]. The technique has high sensitivity, uses low to moderate power lasers, and the coating may be tested at its design wavelength by selecting the appropriate pump laser.…”

Section: Introductionmentioning

confidence: 99%

Absorptance measurements of transmissive optical components by the surface thermal lensing technique

Chow

Taylor

et al. 1998

SPIE Proceedings

View full text Add to dashboard Cite

“…The photothermal deflection (PTD) technique appears suited for this low absorptance application [1][2][3]. The technique has high sensitivity, uses a low to moderate power laser, and the coating may be tested at its design wavelength by selecting the appropriate pump laser.…”

Section: Introductionmentioning

confidence: 99%

<title>High reflector absorptance measurements by the surface thermal lensing technique</title>

Chow

Taylor

et al. 1997

SPIE Proceedings

View full text Add to dashboard Cite

November 4, 1996This is a preprint of a paper intended for publication in a journal or proceedings. Since changes may be made before publication, this preprint is made available with the understanding that it will not be cited or reproduced without the permission of the author. PREPRINTThis paper was prepared for submittal to the DISCLAIMER This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. ABSTRACTSurface thermal lensing is an alternate configuration of a photothermal deflection system that was used to measure low levels of optical absorption. The thermal lensing configuration facilitated the alignment of the pump and probe laser beams by using a larger diameter probe beam. This technique was applied to high performance optical coatings, specifically high reflectors at 511 nm, zero degrees angle of incidence. The absorptance of these coatings was previously measured using a high power copper vapor laser system. A high power copper laser beam is focused onto a ~2 mm diameter spot. A thermal camera senses the temperature rise with respect to the rest of the coating. The temperature change, power density and beam diameter were used with an empirical formula that yields optical absorption. The surface thermal lensing technique was able to resolve absorption levels lower than that achieved with the copper laser method.

show abstract

Photothermal displacement spectroscopy: An optical probe for solids and surfaces

Cited by 318 publications

References 9 publications

Polarization Dependent Ge and Si (111)2x1 Surface State Optical Absorption: A Test of surface Reconstruction Models

Polarization Dependent Ge and Si (111)2x1 Surface State Optical Absorption: A Test of surface Reconstruction Models

Absorptance measurements of transmissive optical components by the surface thermal lensing technique

<title>High reflector absorptance measurements by the surface thermal lensing technique</title>

Contact Info

Product

Resources

About