Plasma-hydrogenated low-threshold wide-band 1.3 μm buried ridge structure laser

1989 ◽  
Vol 25 (21) ◽  
pp. 1433 ◽  
Author(s):  
C. Kazmierski ◽  
B. Theys ◽  
B. Rose ◽  
A. Mircea ◽  
A. Jalil ◽  
...  
Keyword(s):  
Wide Band ◽  
Ridge Structure ◽  
Low Threshold ◽  
Structure Laser

Very low threshold operation of 1.52 μm GaInAsP/InP DFB buried ridge structure laser diodes entirely grown by MOCVD

1988 ◽  
Vol 24 (10) ◽  
pp. 609-611 ◽  
Author(s):  
A. Talneau ◽  
D. Rondi ◽  
M. Krakowski ◽  
R. Blondeau
Keyword(s):  
Laser Diodes ◽  
Ridge Structure ◽  
Low Threshold ◽  
Structure Laser

Ultra-low-threshold, high-bandwidth, very-low noise operation of 1.52 mu m GaInAsP/InP DFB buried ridge structure laser diodes entirely grown by MOCVD

1989 ◽  
Vol 25 (6) ◽  
pp. 1346-1352 ◽  
Author(s):  
M. Krakowski ◽  
D. Rondi ◽  
A. Talneau ◽  
Y. Combemale ◽  
G. Chevalier ◽  
...  
Keyword(s):  
Laser Diodes ◽  
Low Noise ◽  
Ridge Structure ◽  
High Bandwidth ◽  
Low Threshold ◽  
Structure Laser

Low-threshold GRIN-SCH AlGaInAs 1.55 μm quantum well buried ridge structure lasers grown by molecular beam epitaxy

1990 ◽  
Vol 26 (13) ◽  
pp. 889 ◽  
Author(s):  
C. Kazmierski ◽  
M. Blez ◽  
M. Quillec ◽  
M. Allovon ◽  
B. Sermage
Keyword(s):  
Molecular Beam Epitaxy ◽  
Quantum Well ◽  
Molecular Beam ◽  
Ridge Structure ◽  
Low Threshold

scholarly journals Wide-band spectral tuning of heat receptors in the pit organ of the copperhead snake (Crotalinae)

2003 ◽  
Vol 284 (2) ◽  
pp. R598-R606 ◽  
Author(s):  
Vera Moiseenkova ◽  
Brent Bell ◽  
Massoud Motamedi ◽  
Edward Wozniak ◽  
Burgess Christensen
Keyword(s):  
Wide Band ◽  
Threshold Temperature ◽  
Temperature Sensitive ◽  
Spectral Tuning ◽  
Temperature Changes ◽  
Pit Organ ◽  
Wide Range ◽  
The Family ◽  
Low Threshold ◽  
Temperature Receptors

Receptors located in the facial pit organ of certain species of snake signal the presence of prey. Infrared radiation is an effective stimulus suggesting that these receptors may be low-threshold temperature receptors. We recorded from the nerve innervating the pit organ of snakes belonging to the family of Crotalinae while stimulating the receptive area with well-defined optical stimuli. The objective was to determine the sensitivity of these receptors to a wide range (0.400–10.6 μm) of optical stimuli to determine if a temperature-sensitive or photosensitive protein initiated signal transduction. We found that receptors in the pit organ exhibited a unique broad response to a wide range of electromagnetic radiation ranging from the near UV to the infrared. The spectral tuning of these receptors parallels closely the absorption spectra of water and oxyhemoglobin, the predominant chromophore in tissue. Our results support the hypothesis that these are receptors activated by minute temperature changes induced by direct absorption of optical radiation in the thin pit organ membrane.

CW operation of GaInAsP buried ridge structure laser at 1.5 μm grown by LP-MOCVD

1984 ◽  
Vol 20 (21) ◽  
pp. 850 ◽  
Author(s):  
R. Blondeau ◽  
M. Razeghi ◽  
M. Krakowski ◽  
G. Vilain ◽  
B. de Cremoux ◽  
...  
Keyword(s):  
Ridge Structure ◽  
Cw Operation ◽  
Structure Laser

Seven-colour photometry at the Geneva Observatory

1966 ◽  
Vol 24 ◽  
pp. 262-266 ◽  
Author(s):  
M. Golay
Keyword(s):  
Wide Band ◽  
Electric System ◽  
Band Type

During the last 5 years, we have developed a seven-colour photometry at the Geneva Observatory. Our multicolour photo-electric system is of a wide-band type; the bandwidth being about 500Å for four filters. The three others are similar to theUBVsystem. In Table 1 we give the filter combinations used in our photometry (1).

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