DFB laser diodes from830 nm to 920 nm
nanoplus single mode laser diodes
nanoplus is the only manufacturer world- wide routinely providing single and multi mode lasers at any wavelength from 760 to 6000 nm. At wavelengths up to 14 μm, QCLs complete nanoplus’ laser portfolio. Our patented distributed feedback laser diodes deliver single mode emission with well defined optical properties enabling a wide range of applications.
nanoplus lasers operate reliably in tens of thousands of installations worldwide, including chemical and metallurgical in- dustries, gas pipelines, power plants, med- ical systems, airborne and satellite applica- tions.
key features
• very high spectral purity
• narrow linewidth typically < 3 MHz
• excellent reliability
• wide variety of packaging options
• customer-specific designs available
Application areas
• high performance gas sensing for process and environmental control
• precision metrology
• atomic clocks
• spectroscopy
• space technology
nanoplus lasers with excellent performance are specifically designed and characterized to fit your needs. This data sheet summarizes typical properties of nanoplus DFB lasers in the range from 830 nm to 920 nm. Overleaf data for lasers used for high performance Cs D2 spectrosco- py as used for atomic clocks are given as an example.
general ratings (T = 25 °C)
symbol
unit
typical
optical output power
Pout
mW
10
typical maximum operating voltage
Vop
V
2
forward current
If
mA
30
side mode suppression ratio (SMSR)
dB
> 35
On request, lasers with specifically optimized proper- ties, e. g. higher output power, are available.
laser packaging options
TO5.6 header with or without cap
TO5 header with TEC and NTC
butterfly housing with SM fiber
nanoplus DFB laser diodes at 852 nm
A wide variety of gas molecules exhibit characteristic absorption lines in the near infrared. Near 852 nm for example, there is the Cs D2 transition, which can be used for high precision atomic clocks. This data sheet reports performance data of laterally and longitudinally single mode nanoplus DFB lasers at this wavelength. Similar performance data are obtained in the entire wavelength range from 830 nm to 920 nm.
Fig. 1 Room temperature cw spectrum of a nanoplus DFB laser diode operating at 852 nm
In many applications, tempera- ture and/or current variations are used to adjust the laser emis- sion precisely to the target wa- velength.
Fig. 2 Mode hop free tuning of 852 nm based DFBs by current variation at different temperatures
electrooptical characteristics (T = 25 °C)
symbol
unit
min
typ
max
cpeak wavelength
λ
nm
851
852
853
threshold current
Ith
mA
15
20
30
temperature tuning coefficient
CT
nm / K
0.05
0.07
0.15
current tuning coefficient
CI
nm / mA
0.004
0.007
0.015
slow axis (FWHM)
degrees
17
20
25
fast axis (FWHM)
degrees
25
30
40
emitting area
W x H
μm x μm
2 x 1
3 x 1.5
4 x 2
storage temperatures
TS
°C
- 40
+ 20
+ 80
operational temperature at case
Tc
°C
+ 10
+ 25
+ 50
商品属性 [激光器类型] DFB [波长] 830 nm-920 nm