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660nm Red Semiconductor Laser Coupled Fiber Optic
What I’m going to talk about today is 660nm 1800mW fiber laser system. It supports 3 working modes, CW/TTL/Analog. In TTL/Analog modulation mode, an external modulation signal needs to be connected. In addition, the Lock crystal head cannot be pulled out. External signal Mod Input, no need to connect in CW working mode.
The optic fiber can be customized. Here is 1000μm SMA905 interface fiber. 100μm to 1000μm fiber is optional, the coupling efficiency of different fibers will be somewhat different. The larger the core diameter, the higher the coupling efficiency, usually the coupling efficiency is 80~90%.
To adjust the output power by adjusting the working current:
Turn the ‘Adjustor’ knob clockwise, when the current exceeds the minimum working current, the Laser indicator light turns green, and there is laser output at this time. When the ‘Adjustor’ is rotated clockwise to the end, it is the max working current and the max output power of the laser. In addition, the red STOP button is used for emergency stop, and it is not used under normal circumstances.
1615nm IR Invisible Fiber Laser Source
This is a 1615nm 200mW infrared fiber coupled laser source. The output power is 0~200mW adjustable by adjusting the working current. Turn the ‘Adjustor’ knob on the power supply clockwise, when the current exceeds the minimum working current, the Laser indicator light turns green, and there is laser output at this time. When the ‘Adjustor’ is rotated clockwise to the end, it is the max working current and the max output power of the laser.
The Optical fiber is removable. The optical fiber interface is FC/PC, and it can be customized. The 1615nm laser is an infrared laser, which cannot be observed by the human eye. We use an infrared sensitive film to observe the light spot.
450nm 1500mW Software Control Fiber Laser
Today we are talking about software-controlled laser system. This is 450nm blue fiber coupled laser source controlled by software. EasyHost is the control software. The connection between the laser and PC software adopts the communication protocol of RS232. The laser supports two working modes: CW/Modulation. When switching to Modulation, an external signal input is required. This is a fiber-coupled laser, and a free-space output laser can also be customized.
Software operation:
Click the [Open COM] button to connect the control circuit of the laser. Multiple laser working parameters can be viewed/set in the software. As a special reminder, it is necessary to set amaximum working current parameter according to the current laser, so as to avoid the later adjusted current being too high and damaging the laser.
30dBm EDFA Single-mode Fiber Laser Module
This is a C-Band 30dBm module type EDFA. It is equipped with SMF-28e single-mode fiber, and polarization-maintaining fiber can also be customized. This is a high-power EDFA, with a row of aluminum sheets on one side of the shell for easy heat dissipation. This is a modular design, and desktop EDFA can also be customized. Let’s check it now.
High power erbium doped fiber amplifier (EYDFA-HP-BA)，based on amplification technology of double clad erbium doped fiber， unique optical packaging technology, and with reliable hardware light path protection design, realized high power laser output in C band or L band， It has the advantages of high gain and low noise, and can be widely used in CATV, optical fiber communication, laser radar, etc..
The test report & spectrum analysis chart of C-Band 30dBm SM EDFA.
The relationship between power current and output power.
1064nm Infrared Laser 10W High Power DPSS Laser
It is 1064nm high power laser with heat sink at the bottom of the laser head. It adopts air cooling mode, with 2 cooling fans. The light outlet has a protective cover. The modulation mode can be selected from the original TTL or Analog, and upgraded to be compatible with both.
When the key is turned ON, the laser starts to work. The knob is to adjust the current size, thereby adjusting the laser output power. Preheat for 1 to 5 minutes, and the laser power reaches the maximum value.
The connector connecting the laser head to the power supply has a protective cover. When installing the laser, it needs to be unscrewed first.
SM Fiber Laser System SLD Broadband Light Source
SLD broadband light source adopts super radiant semiconductor diode light-emitting chip, which outputs broadband spectrum with low coherence degree and high output optical power spectral density. The operating wavelength can be selected from O, S, C, L and other bands, suitable for optical OCT, optical fiber sensing applications.
This is a 1550nm 10mW SLD light source of module type. It is equipped with a single mode fiber. It can be customized power adjustable version. When the power adjustment is selected, the power adjustment is controlled through the RS232 serial communication. The standard version is a fixed power mode, the light source is controlled by the button. We tested it with an infrared photosensitive film, and we could see a light spot.
The test data report and spectrum of 1550nm light source.
Ultra Narrow Linewidth 3kHz PM Fiber Laser Source
This is a 1550nm 50mW PM fiber laser source. The output power can be adjusted, and the adjustment accuracy is 0.1mW. This is a narrow linewidth laser with a spectral bandwidth of less 3kHz. Customizable software control function, using RS232 communication serial port. Standard version with button control, control switch, adjust the power size. PM1550 polarization maintaining fiber is installed, and SM single-mode fiber can also be customized. Let’s check it now.
Single frequency narrow linewidth fiber laser adopts rare earth doped fiber DFB laser cavity structure, output single longitudinal mode laser with wavelength of 1550nm, spectral linewidth is less than 3kHz, output spectral side mode suppression ratio exceeds 60dB, can provide module or desktop package, is distributed Ideal laser source for applications such as sensing.
The test report of 1550nm 50mW 3kHz PM fiber laser.
This is the line width test, the actual measurement is 0.95kHz.
532nm 1W DPSS TEM00 Lab Laser
It is 532nm DPSS laser source. This laser source can be controlled by software. The connection of the laser and the PC software, using the RS232 communication protocol. The laser supports two modes of operation CW/Modulation, and an external signal input is required when switching to Modulation. Here is the free space output, and it is also possible to customize the fiber-coupled laser. Let’s check it now.
Software operation.
Click the [Open COM] button to connect the control circuit on the laser.
Multiple laser operating parameters can be viewed/set in the software.
As a special reminder, it is necessary to set a maximum working current parameter according to the current laser first, so as to avoid the current of the later regulation being too high and damaging the laser.
405nm SM Fiber Laser Controlled by Button Operational Demo
This is a video about a desktop laser with button control of the laser output. we demonstrate with a 405nm 20mW SM fiber laser. It is controlled by buttons by default, and it can also be controlled by software. The laser is equipped with single-mode fiber output, and polarization-maintaining fiber output can also be customized. It has LCD display, real-time display of current power. The power is adjustable, and the adjustment accuracy is 0.1mW. Let’s check it now.
Adjust the laser output power：
Press the middle square button to enter setup mode.
The left and right arrow buttons are used to select the digital position to be adjusted.
The up and down arrow buttons are used to adjust the size of the numbers.
Finally press the middle square button to save and exit the settings.
When the key is turned ON, the Active indicator lights up, indicating that there is laser output.
This laser adopts semiconductor laser chip, and the professionally designed drive and temperature control circuit temperature control ensures the safe operation of the laser, stable output power and spectrum, and excellent spot quality (TEM00 mode).
The test data report and optical spectrum of 405nm fiber laser source.
532nm DPSS Laser VS 520nm Semiconductor Laser
532nm and 520nm are both common green lasers in the laboratory. The difference is that one is a diode pumped solid state(DPSS) laser and the other is a semiconductor laser.
532nm is a commonly used wavelength in dpss laser. DPSS lasers have advantages in compactness and efficiency over other types, and high power DPSS have replaced ion lasers and flashlamp-pumped lasers in many scientific applications, and are now appearing commonly in green and other color laser pointers.
The choice of the semiconductor material determines the wavelength of the emitted beam, which in today’s laser diodes range from infra-red to the UV spectrum. Laser diodes are the most common type of lasers produced, with a wide range of uses that include fiber optic communications, barcode readers, laser pointers, CD/DVD/Blu-ray disc reading/recording, laser printing, laser scanning and light beam illumination. With the use of a phosphor like that found on white LEDs, Laser diodes can be used for general illumination.
520nm 12W semiconductor laser.
Custom fiber coupling is available for either 532nm dpss laser or 520nm semiconductor lasers. Please go to CivilLaser for details.
