scholarly journals Continuous-wave two-photon absorption in a Watt-class semiconductor optical amplifier

2008 ◽  
Vol 16 (16) ◽  
pp. 12387 ◽  
Author(s):  
Paul W. Juodawlkis ◽  
Jason J. Plant ◽  
Joseph P. Donnelly ◽  
Ali Motamedi ◽  
Erich P. Ippen
Keyword(s):  
Semiconductor Optical Amplifier ◽  
Continuous Wave ◽  
Optical Amplifier ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

Two-photon absorption laser assisted device alteration using continuous wave 1,340 nm laser

2011 ◽  
Vol 22 (10) ◽  
pp. 1542-1552 ◽  
Author(s):  
Baohua Niu ◽  
Patrick Pardy ◽  
Jerry Fortier ◽  
Mel Ortega ◽  
Travis Eiles
Keyword(s):  
Continuous Wave ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

Two-Photon Absorption Laser Assisted Device Alteration Using 1340nm CW Laser: Critical Timing Fault Isolation & Localization for 32nm MPU and Beyond

2010 ◽  
Author(s):  
Baohua Niu ◽  
Pat Pardy ◽  
Joe Davis ◽  
Mel Ortega ◽  
Travis Eiles
Keyword(s):  
High Power ◽  
Continuous Wave ◽  
Numerical Aperture ◽  
Fault Isolation ◽  
Photon Absorption ◽  
Solid Immersion Lens ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Critical Timing ◽  
Power Densities

Abstract In this paper, we report on the first observation and study of two-photon absorption (TPA) based laser assisted device alteration (LADA) using a continuous-wave (CW) 1340nm laser. The study was conducted using LADA systems equipped with high numerical aperture (NA) liquid and solid immersion lens objectives on Intel’s 45 nm and 32 nm multiprocessor units (MPU) and test chips. The power densities achievable using these lenses are similar to those reported in the literature for TPA in silicon of CW 1455nm light [1]. We show that the induced photocurrent has a quadratic dependence on the input laser power, a key indicator of two-photon phenomenon. Our results imply that even when using 1340nm wavelength CW lasers, there is a potential for laser invasiveness with the high power densities achievable using high NA objectives. Laser induced damage of the DUT is also a possibility at these high power densities, particularly with the solid immersion lens (SIL). However, we show that the DUT damage threshold can be increased by reducing the DUT’s temperature. Finally, we present results demonstrating a >40% improvement in localization of critical timing faults using TPA based LADA, when compared to traditional 1064nm wavelength (single-photon absorption) LADA.

Fast and sensitive nonlinear processes: bistability in CdHgTe

1984 ◽  
Vol 313 (1525) ◽  
pp. 277-284 ◽  
Keyword(s):  
Refractive Index ◽  
Optical Bistability ◽  
Continuous Wave ◽  
Photon Absorption ◽  
Cadmium Mercury Telluride ◽  
Large Intensity ◽  
Mercury Telluride ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Fabry Perot

We discuss the origin and characteristics of the very large intensity-dependent changes in the refractive index of the semiconductor cadmium mercury telluride at 10.6 m. With continuous wave (c.w.) radiation and sample temperatures of 77 K nonlinear Fabry-Perot effects can be observed at powers as low as 1 mW. The Auger dominated recombination process and the thermal contributions to the refractive index make observations of optical bistability difficult with c.w. radiation. However, the use of a pulsed CO 2 laser and two-photon absorption of the radiation does lead to the observation of bistability at room temperature. We compare these results with the reported work on InSb.

scholarly journals Continuous-wave spontaneous lasing in mercury pumped by resonant two-photon absorption

2010 ◽  
Vol 35 (16) ◽  
pp. 2690 ◽  
Author(s):  
Daniel Kolbe ◽  
Martin Scheid ◽  
Andreas Koglbauer ◽  
Jochen Walz
Keyword(s):  
Continuous Wave ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon
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