Investigation of Temperature Effects of a 635 nm Low Power Solid-State Diode Laser on Agar Phantom Using Two Different Thermocouples

In this work, control rod worth, xenon (Xe) effect on reactivity and power defect have been measured by doing experiments in the BAEC TRIGA Mark-II research reactor (BTRR) and through established theoretical analysis. Firstly, to study the xenon-135 effect on reactivity, reactor is critical at 2.4 MW for several hours. Next, experiments have been performed at very low power (50 W) to avoid temperature effects. Moreover, for the power defect experiment, different increasing power level has been tested by withdrawing the control rods. Finally, it is concluded that the total control rods worth of the BAEC TRIGA Mark-II research reactor, as determined through this study, is enough to run the reactor at full power (3 MW) considering the xenon-135 and fuel temperature effects.

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The effects of photobiomodulation therapy for the treatment of dentin hypersensitivity

Clinical and Laboratorial Research in Dentistry ◽

10.11606/issn.2357-8041.clrd.2020.162971 ◽

2020 ◽

Author(s):

Erika Michele dos Santos Araújo ◽

Bárbara Fávero Araújo Lima ◽

Júlia Gomes Lúcio de Araújo ◽

Fernanda Cristina Nogueira Rodrigues ◽

Stella Ferreira do Amaral ◽

...

Keyword(s):

Case Report ◽

Visual Analogue Scale ◽

Low Power ◽

Diode Laser ◽

Male Patient ◽

Analogue Scale ◽

Dentin Hypersensitivity ◽

Cervical Lesions ◽

Patient Reported ◽

Power Diode

Objective: This case report proposes a treatment for dentin hypersensitivity (DH) using photobiomodulation (PBT) with low power diode laser. Methods and Results: Male patient, 28 years old, reporting “dental sensitivity,” diagnosed by anamnesis and intraoral examination, with non-carious cervical lesions (NCCL) and DH on teeth 15 to 25, with different pain intensities, measured with visual analogue scale (VAS). For DH treatment, a PBT was proposed, with 808nm, 100mW, 20s and 2J of energy, applied during 3 sessions, with one-week interval and reevaluation after 30 days. After the first session, the patient reported improvement of sensitivity in all teeth, except for 15, that remained sensitive even during the reevaluation. Conclusion: PBT was effective in DH treatment, with desensitization being observed for 30 days in 90% of treated teeth.

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Resonantly diode laser pumped 1.6-μm-erbium-doped yttrium aluminum garnet solid-state laser

Applied Physics Letters ◽

10.1063/1.1898427 ◽

2005 ◽

Vol 86 (13) ◽

pp. 131115 ◽

Cited By ~ 61

Author(s):

Dmitri Garbuzov ◽

Igor Kudryashov ◽

Mark Dubinskii

Keyword(s):

Solid State ◽

Diode Laser ◽

Yttrium Aluminum Garnet ◽

Solid State Laser ◽

State Laser ◽

Erbium Doped ◽

Yttrium Aluminum

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Low Power Consumption Solid State Humidity Sensor

IEEE Transactions on Consumer Electronics ◽

10.1109/tce.1983.356316 ◽

1983 ◽

Vol CE-29 (3) ◽

pp. 305-309 ◽

Cited By ~ 1

Author(s):

Keiji Yuuki ◽

Tomizo Sakano ◽

Yuji Yokomizo

Keyword(s):

Solid State ◽

Power Consumption ◽

Low Power ◽

Humidity Sensor ◽

Low Power Consumption

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Fiber-coupled high brightness high power diode laser for solid-state laser pumping and material processing

10.1117/12.478369 ◽

2003 ◽

Cited By ~ 1

Author(s):

Bodo Ehlers ◽

Stefan Heinemann ◽

Falk Doerfel

Keyword(s):

Material Processing ◽

Solid State ◽

Diode Laser ◽

High Power ◽

Solid State Laser ◽

High Brightness ◽

State Laser ◽

Laser Pumping ◽

Power Diode ◽

High Power Diode Laser

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Activation of C-fiber nociceptors by low-power diode laser

Arquivos de Neuro-Psiquiatria ◽

10.1590/0004-282x20160018 ◽

2016 ◽

Vol 74 (3) ◽

pp. 223-227 ◽

Cited By ~ 2

Author(s):

Eduardo Azevedo ◽

Andressa Silva ◽

Raquel Martins ◽

Monica L. Andersen ◽

Sergio Tufik ◽

...

Keyword(s):

Low Power ◽

Evoked Potentials ◽

Diode Laser ◽

Laser Evoked Potentials ◽

Non Invasive ◽

C Fibers ◽

C Fiber ◽

The Mean ◽

Young Subjects ◽

Power Diode

ABSTRACT Objective The evaluation of selective activation of C-fibers to record evoked potentials using the association of low-power diode laser (810 nm), tiny-area stimulation and skin-blackening. Method Laser-evoked potentials (LEPs) were obtained from 20 healthy young subjects. An aluminum plate with one thin hole was attached to the laser probe to provide tiny-area stimulation of the hand dorsum and the stimulated area was covered with black ink. Results The mean intensity used for eliciting the ultra-late laser-evoked potential (ULEP) was 70 ± 32 mW. All subjects showed a clear biphasic potential that comprised a negative peak (806 ± 61 ms) and a positive deflection (1033 ± 60 ms), corresponding to the ULEP related to C-fiber activation. Conclusion C-fiber-evoked responses can be obtained using a very low-power diode laser when stimulation is applied to tiny areas of darkened skin. This strategy offers a non-invasive and easy methodology that minimizes damage to the tissue.

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