A pivotal technology here is distributed feedback lasers. These are now essential to telecommunications, as well as a host of other research and commercial applications.
But what are DFB lasers?
Below, we’ll answer this question by taking at how distributed feedback diodes work, what they’re used for, and who supplies them. Whether you’re visiting out of curiosity or looking to use DFB lasers, keep reading to find out more.
1W Laser Module Green Laser Diodes 520nm DPSS Head & Driver
Model: 1000MW520
Wavelengh: 520nm
Output Power: more than 1000mW
Beam Mode: TEM00 Round spot
Beam Divergence: less than 1mrad
Laser Grade: Class 3
Modulation Mode: TTL or Analogue Optional
Input Voltage: 7.8V
Input Current: 1900mA
Lifetime:10 000
Size: 40X40X80mm
Weight: 150g
Model Number: 1W520
Voltage: 12V
Item Type: Stage Lighting Effect
Power: 20W
Purple/Violet Beam Laser for Pistol Rifle Gun AR15
High Quality purple beam laser for pistol with Metal Mount. This purple beam laser for pistol has a 405nm wavelength.
There are two Metal mounts for different diameters rifles and pistol.
Purple/Violet color laser beam for pointing
2 Mounts for Rifle and Pistol
2 Buttons for turning the sight on (Check the pictures for details)
日 亜 レーザー ダイオード, 日 亜 化学 半導体 レーザー
Nichia 日亜 NUBM06 青色レーザーダイオード 8*4W 32W ダイオードバンク
1.高出力マルチレーザーダイオード（LD）バンク。
2.8コリメータビーム。
3.ガス放出はありません。
4.高い熱放散。
5.LDの除去を防止するための安全性の高い構造。
[仕様]
製品名：レーザダイオード
モデル：NUBM06
波長：445nm
電力：CW 4W*8 = 32W
パルスパワー：シングル> 8W
動作電流：<3.5A
動作電圧：3.7-4.8V
動作温度：0-65℃
保管温度：-40-85℃
パッケージ：T05（Φ9mm）
耐用時間：10000時間
The laser diode pinout is the guide for us to how to connect the diodes. It may be different according to the laser diode module number. You can see it the following drawing. The 1 is LD anode +, the 3 is LD cathode – , the 2 is to connect the laser diode case.
More information about laser diode pinout .
High quality fiber coupled aom for Q-switch laser and other applications. AOMs with wavelength of 1064nm,1550nm,2000nm are fiber coupled, while those 532nm,581nm,614nm, 705nm, 780nm are free space . You need to choose the wavelength, frequency, fiber type,fiber jacket on in&out and fiber length.
FAQ:
1. Most of the specification can be customized according to your requirements. Please send us your application details.
2. The lead time is about 1-2 weeks, and we can ship over the world.
3. AOM has the drivers included, that means the price is for whole unit,an Acousto optic modulator and a driver.
An acousto-optic modulator (AOM) uses the acousto-optic effect to diffract and shift the frequency of light using sound waves (usually at radio-frequency).More news about AOM modulators.They are used in lasers for Q-switching, telecommunications for signal modulation, and in spectroscopy for frequency control. A piezoelectric transducer is attached to a material such as glass. An oscillating electric signal drives the transducer to vibrate, which creates sound waves in the material. These can be thought of as moving periodic planes of expansion and compression that change the index of refraction. Incoming light scatters off the resulting periodic index modulation and interference occurs similar to Bragg diffraction. The interaction can be thought of as a three-wave mixing process resulting in Sum-frequency generation or Difference-frequency generation between phonons and photons
660nm Stable DPSS Red Diode Laser is used for plasmonic resonance and photodynamic therapy
Acousto-Optic Frequency Shifters 1064nm Free-space AOFS
The acousto-optic Frequency Shifter (AOFS) with RF driver is used to modify the frequency of the optical beam. Due to the Doppler shift, the frequency shift of 1st order diffracted light (variation quantity of wavelength) equals to the frequency of acoustic (wavelength) after the AO frequency shifters. If the incident direction of acoustic wave and optical wave are the same, the laser frequency shifts will be the positive value, anyway if the incident direction are opposite, the value of the laser frequency shifts will be the negative value.
Applications such as interference-based optical techniques require a high extinction ratio between the diffracted and undiffracted beam; This can be achieved with a high-quality optical finish to minimize optical scatter.
We offer standard products with frequency shifts of 73 MHz In addition, also provide the services of customize for center frequency and the value of frequency shifts.
Applications：
Interferometry
Laser cooling
Laser Doppler velocimetry
Optical heterodyne detection
Interaction material TeO2
Wavelength 1064 nm or other
Damage threshold>1 GW/cm²
AR coating reflection<0.2 % per surface Transmission(Single pass)>97 %
RF frequency70/73/83 MHz or other
Frequency shift bandwidth : +-1,+-3,+-8MHz or other
Polarization Linear, vertical to base
Aperture 1.0 mm or other
Acoustic mode Compressional
Rise time<120 ns/mm Diffraction angle 17.7,18.5,21.0 mrad or other Diffraction efficiency>70 %
RF power 2 W (max)
RF connector SMA-F
Cooling Conduction-cooled
Shell material Aluminum alloy 6061
A DFB Laser (distributed feedback laser) is a type of laser diode, quantum cascade laser or optical fiber laser. The active region of the DFB Laser contains a periodically structured element or diffraction grating.
The structure builds a one-dimensional interference grating (Bragg scattering) and the grating provides optical feedback for the laser.
DFB lasers tend to be much more stable than Fabry-Perot or DBR lasers and are used frequently when clean single mode operation is needed, especially in high speed fiber optic telecommunications. Semiconductor DFB lasers in the lowest loss window of optical fibers at about 1.55um wavelength, amplified by Erbium-doped fiber amplifiers , dominate the long distance communication market, while DFB lasers in the lowest dispersion window at 1.3um are used at shorter distances.
1550nm DFB laser photodiode coaxial pigtail types package FC/APC SC/APC
Certification: CE
Origin: CN(Origin)
Fiber Type: Single Mode
Connector Type: FC/APC
Model Number: DFB-1550nm
Item: DFB laser photodiode
wavelength: 1550nm
color: randomly:yellow,white or blue
Qty: 1pc
520nm 50mw Green Laser Diode TO56 with PD N Type 515nm 530nm LD DIY/LAB Light
1.Single tranverse mode semiconductor laser
2.TO56 package with photo diode
Electrical and Optical Characteristics(Tc=25℃)
Lasing Wavelength:520nm(±10nm)
Optical Output:50mW
Threshold Current:45mA
Operating Current:125mA
Operating Voltage:6.5V~8.0V
Monitor Current:0.09mA
Operating Temperature:-20 to +60℃
Nichia NURM31T 638nm 43w brand new laser array
High Power Multiple Laser Diode LD Chip Package
24 Collimator Beams
6 series x 4 parallel connection
High Heat Dissipation
Forward Current: 2.25A (CW Operation)
Tm = 25 , ACC (Auto Current Control) Operation
The CWDM(Aspherical Lens) TO LD laser diodes are uncooled multi-quantum-well DFB (Distributed Feedback) laser diodes for 2.5Gbps and 10Gbps transmission at 1310/1490/1550nm.
https://www.beamq.com/1270nm-to-1610nm-cwdm-to56-aspherical-lens-p-1719.html
| 品番 | 総検知幅(mm) | 素子検知幅 (mm) | ch数 (ch) | マグネット |
|---|---|---|---|---|
| BS05M1KFCF | 60 | 10 | 6 | 希土類 |
| BS05M1KFFA | 90 | 10 | 9 | フェライト |
| BS05M1KFJA | 180 | 10 | 18 | フェライト |
