DFB – Distributed Feedback Diodes
• Turnkey single-frequency operation (built-in grating) • Wavelengths from 640 .. 2880 nm available • Frequency tuning via temperature and current
• Mode-hop-free scans up to 1400 GHz • Diodes sold separately and in DFB pro systems
Distributed feedback (DFB) laser diodes feature a grating structure within the semiconductor and thus operate in both longitudinal and transverse single mode. Tuning is achieved by modulating either the laser current or the chip temperature. Mode-hop free tuning is maintained over several hundred GHz. Applications include alkaline spectroscopy, laser cooling, gas detection and the generation of tunable cw terahertz radiation.
DFB/DBR laser diodes may be integrated into a DFB pro.
Options
• TO-9 mm package
• TO-3 package with built-in TEC and thermistor
• Butterfly package with built-in optical isolator and fiber pigtail
• Note: Some packages may only be available for certain wavelengths, please inquire.
Applications
• Atom Laser Cooling & Trapping
Specifications
Center wavelengths
640 .. 685 nm1, 760 .. 2880 nm
Typical output power
2 .. 150 mW
Typical coarse tuning
2 .. 6 nm
Thermal tuning
Typical range
Typical Speed
Typical rate> 1000 GHz
50 GHz/s
-25 GHz/K (@800 nm), -10 GHz/K (@ 1500 nm)Electric tuning
Typical range
Typical speed
Typical rate~ 50 GHz
10 kHz²
1 .. 10 GHz / mATypical linewidth (5 µs integration time)
500 kHz - 4 MHz
Typical output beam characteristics
3 mm x 1 mm
Typical output beam polarization
Linear > 100:1
Thermal stabilization
ColdPack, TO-3 or butterfly package
1Spectral coverage with gaps
2With DCC 110. Higher bandwidth feasible with DL-MOD
Additional Information
Patented ColdPack for thermal control of DFB diodes. Schematics of DFB and DBR laser diodes. Emission spectrum of a DFB diode at 1545 nm. Incoherent
background radiation is suppressed by > 50 dB.
Thermal frequency tuning of an 895 nm DFB diode.
商品属性 [波长] 640 .. 685 nm1, 760 .. 2880 nm [功率] 2 .. 150 mW