Modification of the germination and the total length of wheat seedling by an infrared-continuous wave semiconductor laser

2012 ◽  
Author(s):  
M. Hernandez-Vizuet ◽  
A. Michtchenko ◽  
O. Budagovskaya
Keyword(s):  
Semiconductor Laser ◽  
Continuous Wave ◽  
Wheat Seedling ◽  
Total Length

Experimental Studies of Rocket Fuels Oxygen--Hydrogen, Oxygen--Methane Ignition by a Semiconductor Laser

2021 ◽  
pp. 80-97
Author(s):  
S.G. Rebrov ◽  
V.A. Golubev ◽  
A.N. Golikov ◽  
A.E. Morgunov
Keyword(s):  
Semiconductor Laser ◽  
Continuous Wave ◽  
Rocket Engine ◽  
Experimental Studies ◽  
Operating Parameter ◽  
Laser Ignition ◽  
Low Thrust ◽  
Ignition System ◽  
Radiation Output ◽  
Fuel Mixtures

The paper presents results of experimental studies aimed at introducing laser ignition of fuel mixtures into aero-space design practice. The source of ignition energy was a semiconductor laser featuring fibre radiation output, operating in a quasi-continuous wave mode. We carried out experiments for oxygen--hydrogen and oxygen--methane fuel types. The purpose of our research was to demonstrate the fundamental possibility of implementing fuel ignition by means of this type of laser, using a rocket engine igniter and a low-thrust rocket engine as examples. Employing semiconductor lasers directly as an ignition source for fuel mixtures in aerospace technology is attractive as it may feasibly reduce the requirements for thermal conditions during operation of the laser ignition system on board a rocket or spacecraft, as well as expand the range of permissible vibration and shock loads. The paper presents experimental results that delineate operating parameter ranges and operation cyclograms for the devices under consideration that ensured stable ignition of oxygen--hydrogen and oxygen--methane fuel mixtures; we also list the required power parameters for a semiconductor laser. The investigation revealed the specifics of using a semiconductor laser-based ignition system, which will be useful in developing laser rocket launching devices, ensuring reliable repeated on-off functionality

scholarly journals Continuous-wave 155 μm diode-pumped surface emitting semiconductor laser for broadband multiplex spectroscopy

2007 ◽  
Vol 32 (11) ◽  
pp. 1387 ◽  
Author(s):  
M. Jacquemet ◽  
N. Picqué ◽  
G. Guelachvili ◽  
A. Garnache ◽  
I. Sagnes ◽  
...  
Keyword(s):  
Semiconductor Laser ◽  
Continuous Wave ◽  
Diode Pumped

scholarly journals Monolithic dual-mode distributed feedback semiconductor laser for tunable continuous-wave terahertz generation

2009 ◽  
Vol 17 (16) ◽  
pp. 13851 ◽  
Author(s):  
Namje Kim ◽  
Jaeheon Shin ◽  
Eundeok Sim ◽  
Chul Wook Lee ◽  
Dae-Su Yee ◽  
...  
Keyword(s):  
Semiconductor Laser ◽  
Continuous Wave ◽  
Distributed Feedback ◽  
Terahertz Generation ◽  
Dual Mode

Continuous-wave single-frequency 295 nm laser source by a frequency-quadrupled optically pumped semiconductor laser

2009 ◽  
Vol 34 (22) ◽  
pp. 3511 ◽  
Author(s):  
Yushi Kaneda ◽  
Mahmoud Fallahi ◽  
Jörg Hader ◽  
Jerome V. Moloney ◽  
Stephan W. Koch ◽  
...  
Keyword(s):  
Semiconductor Laser ◽  
Continuous Wave ◽  
Single Frequency ◽  
Laser Source ◽  
Optically Pumped

scholarly journals Frequency-modulated continuous-wave generation based on an optically injected semiconductor laser with optical feedback stabilization

2019 ◽  
Vol 27 (2) ◽  
pp. 1217 ◽  
Author(s):  
XiaoDong Lin ◽  
GuangQiong Xia ◽  
Zhou Shang ◽  
Tao Deng ◽  
Xi Tang ◽  
...  
Keyword(s):  
Semiconductor Laser ◽  
Continuous Wave ◽  
Optical Feedback ◽  
Wave Generation ◽  
Feedback Stabilization
Sign in / Sign up

Export Citation Format

Share Document