High-gain optical amplification of laser diode signal by Raman scattering in single-mode fibres

1983 ◽  
Vol 19 (19) ◽  
pp. 751 ◽  
Author(s):  
E. Desurvire ◽  
M. Papuchon ◽  
J.P. Pocholle ◽  
J. Raffy ◽  
D.B. Ostrowsky
Keyword(s):  
Raman Scattering ◽  
Laser Diode ◽  
Single Mode ◽  
High Gain ◽  
Optical Amplification

Coherent summation of the radiation of a single-mode laser diode array

2012 ◽  
Vol 42 (6) ◽  
pp. 561-564 ◽  
Author(s):  
S I Derzhavin ◽  
O A Dyukel' ◽  
N M Lyndin
Keyword(s):  
Laser Diode ◽  
Single Mode ◽  
Diode Array ◽  
Laser Diode Array ◽  
Mode Laser ◽  
Single Mode Laser

Coherence characteristics of a single-mode GaAlAs laser diode

1981 ◽  
Vol 71 (2) ◽  
pp. 171 ◽  
Author(s):  
Manabu Yoshikawa ◽  
Norihito Suzuki ◽  
Tatsuro Suzuki
Keyword(s):  
Laser Diode ◽  
Single Mode

Lens aberration effect on a laser-diode-to-single-mode-fibre coupler

1982 ◽  
Vol 18 (14) ◽  
pp. 586 ◽  
Author(s):  
M. Sumida ◽  
K. Takemoto
Keyword(s):  
Laser Diode ◽  
Single Mode ◽  
Single Mode Fibre ◽  
Mode Fibre

scholarly journals Effect of 405 nm Diode Laser with Varying Irradiation Time on BHK-21 Fibroblast Viability

2019 ◽  
Vol 9 (1) ◽  
pp. 13
Author(s):  
Kun Ismiyatin ◽  
Leidy Herlin Rumbiak ◽  
Widya Saraswati ◽  
Sri Kunarti ◽  
Anuj Bhardwaj
Keyword(s):  
Laser Diode ◽  
Irradiation Time ◽  
Control Cell ◽  
Stimulated Emission ◽  
Fibroblast Cells ◽  
Optical Amplification ◽  
Viability Test ◽  
Inhibition Response ◽  
Levene Test ◽  
Radiation Time

Background: Laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation; it can be used for surgery, detoxification, bio stimulation and antibacterial. However, lasers have Biphasic Dose Response (BDR), which is bio stimulation and bio inhibition. To determine if 405 nm laser diode is biocompatible, viability test is necessary before these lasers can be labeled as viable to use in dental therapy. Aim: To prove the variation of radiation time of the 405 nm laser diode radiation can cause bio stimulation and bio inhibition response that affects the viability of BHK-21 fibroblast cells. Method: Viability test was carried out using BHK-21 fibroblast cells which were inserted into 96-well microplate, then radiated with 405 nm laser diode with varying irradiation time of 30s, 60s, 120s, 240s and 480s. After radiation, the cells are then incubated for 24h. Cytotoxicity was observed using MTT assay and ELISA reader. Data was analyzed using the Kolmogorov-Smirnov test, Levene Test, Welch ANOVA, and Tukey HSD. Results: BHK-21 fibroblast cells radiated with 405 nm laser diode with radiation time of 30s, 60s, 120s, and 240s have the same viability as the control cell, while at 480 seconds the viability exceeds that of the control cell. Conclusion: 405 nm laser diode with radiation times of 30s, 60s, 120s, and 240s do not affect the viability of BHK-21 fibroblast cells. Meanwhile, 480s irradiation time of 405 nm laser diode causes bio stimulation response that increases the viability of BHK-21 fibroblast cells.

The Second-Order Raman Stokes Stronger Than the First-Order Raman Stokes Due to Inverse Raman Scattering in a Single Mode Tellurite Fiber

2017 ◽  
Vol 53 (4) ◽  
pp. 1-4 ◽  
Author(s):  
Tonglei Cheng ◽  
Xiaojie Xue ◽  
Weiqing Gao ◽  
Takenobu Suzuki ◽  
Yasutake Ohishi
Keyword(s):  
Raman Scattering ◽  
Single Mode ◽  
Second Order ◽  
First Order
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