Quantum Dot Technology Laser Diodes

5 Quantum Dot Technology Laser Diodes from 2 Manufacturers meet your specification.

Quantum Dot Technology Laser Diodes from the leading manufacturers are listed here. Narrow down on the list of Products by wavelength, type, technology and other parameters.

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  • Technology : Quantum Dot Technology
Description: Fabry-Perot Laser Diode
Type:
Free Space Laser Diode
Configuration:
Single Emitter
Technology:
Fabry-Perot (FP), Quantum Dot Technology
Package Type:
TO-Can
Wavelength:
1310 nm
Output Power:
6 mW
Operating Current:
28 to 45 mA
Operating Voltage:
1.4 to 1.6 V
Threshold Current:
8 to 15 mA
Reverse Voltage:
2 V
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Description: High Power Diode Laser on open heatsink
Type:
Free Space Laser Diode
Technology:
Quantum Dot Technology
Package Type:
C-Mount, TO-Can
Wavelength:
1130 to 1320 nm
Output Power:
5 to 12 W
Operating Current:
9 to 10.5 A
Threshold Current:
0.5 to 0.7 A
Reverse Voltage:
2 V
Fiber Modes:
Multi-Mode
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Description: Fiber coupled Comb Laser Diode @ 1310 nm
Type:
Fiber-Coupled Laser Diode
Technology:
Quantum Dot Technology
Package Type:
Butterfly
Wavelength:
1300 to 1320 nm
Output Power:
25 to 30 mW
Operating Current:
160 to 180 mA
Threshold Current:
20 to 30 mA
Reverse Voltage:
2 V
Fiber Modes:
Polarization Maintaining
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Description: Fabry-Perot Laser Diode
Type:
Free Space Laser Diode
Technology:
Fabry-Perot Laser (FP), Quantum Dot Technology
Package Type:
Chip
Wavelength:
1300 nm
Output Power:
0.016 W
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Description: 10 mW TOCAN with mPD up to 125°C
Type:
Free Space Laser Diode
Configuration:
Single Emitter
Technology:
Fabry-Perot Laser (FP), Quantum Dot Technology
Package Type:
TO-Can
Wavelength:
1300 nm
Output Power:
0.01 W
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1 - 5 of 5 Quantum Dot Technology Laser Diodes

What is the Quantum dot Laser Diodes?

A quantum dot laser diode is a type of laser diode that uses the quantum dot as the active laser medium in its light-emitting region. A quantum dot laser diode is formed by placing the quantum dots between the P-N junction. The quantum dot laser diodes are available in both fiber-coupled and free-space type. Mostly, the packages such as TO-can, chip, C-mount, and butterfly packages are used to pack the quantum dot laser diodes. These diodes are used in optical transmission, data communication, spectroscopy, telecommunications, display technology (laser TV), the multi-channel source for DWDM communication, and medical applications. 

Quantum dot diode (Fiber-coupled butterfly package)

Quantum dot diode structure

Density state N(E) of quantum dot (0-D)

Quantum dots are semiconductor particles with a size range of few nanometers. The quantum dot size is less than or equal to (≤)  the de Broglie wavelength of the electron. Hence, a quantum dot laser diode has an active medium thickness less than or equal to (≤) the de Broglie wavelength of the electron. These narrow active region forms the zero-dimensional (0-D) quantization and results in discrete energy level. In a quantum dot, the density of the state is continuous and independent of energy. The optoelectronic property change depends upon the size and shape of the quantum dot. The large quantum dot has a size of 5-6 nm, yielding the color orange or red, and the smaller quantum dot has a size of 2-3 nm, yielding the color blue or green.

This much small active region is formed by epitaxial regrowth on specially processed surfaces (cleaved, etched, vicinal, or V-groove). Because of the unique shape of the density states in the quantum dot system, the quantum dot laser diodes have better performance over the quantum well laser diodes and other conventional laser diodes in the following points.

Advantages of quantum dot laser diodes:

1. The population inversion can be easily achieved because the electron profile in the band edge is much sharper. Hence, the quantum dot laser diode requires a lower threshold current.

2.  Higher output power.

3. Insensitive to temperature variation. Because carrier distribution in quantum dot structure is less sensitive to temperature variation.

4. Wider wavelength tuning.

5. High speed.

Specifications details of quantum dot laser diodes:

Central wavelength: Represents the wavelength of laser emitted from the quantum dot laser diode. The wavelength is represented in nm (nanometre).The quantum dot laser diodes have wider wavelength operating range.

Technology: Quantum dot technology

Operation mode: Represents the operation mode CW mode/Pulse mode.

Type: Free space / Fiber coupled

Output power: Represents the output power of the quantum dot laser diode. Usually, the  quantum dot laser diodes are available in the power range of  milliWatts.

Spectral width: It is the width of the optical spectrum at the half-maximum power. It is represented in nm.

Threshold current (Ith): It is the current at which the output optical power increases sharply. When the laser diode is biased below this threshold current, the output optical power will be very low. It is represented in milli Ampere. Mostly, the quantum dot laser diodes have the threshold current range of 10 mA to hunredas of mA .

Operating current: It is the driving current or input currents when the quantum dot laser diode reaches the rated power. The operating current of quantum dot laser diodes can vary form mA to Ampere range.

Operating voltage: Represents the supply voltage. Usually, it is in the range of 1.3 V to 2.3 V  

Reverse voltage: Represents the maximum allowable reverse voltage, when it is applied across the laser diode. Beyond the reverse voltage, the diode will damage. It is usually in the range of 2 V.

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