ALPES QCL laser

The idea of using quantum well heterostructures to control the energy of photons emitted in semiconductors, rather than the more common and higher energy band transitions, was first proposed by R.F. Kazarinov and R.A. Suris in 1971. The first experimental demonstration of this quantum cascade laser QCL was conducted in Bell Labs in 1994 by J é r ô me Faist, Federico Capasso, Deborah Sivco, Carlo Sirtori, Albert Hutchinson, and Alfred Cho.

In 1998, Antoine M ü llerr and Matthias Beck founded ALPES LASER in Neuch â tel, Switzerland. The founder was J é r ô me Faist, who was then a professor at Neuch â tel University and is now at ETH Z ü rich. At that time, ALPES Laser was a company that provided quantum cascade lasers in the market. The company commercialized a continuous wave laser in 2001 and a wide gain laser in 2009.

Currently, ALPES Laser offers a diverse range of quantum cascade lasers and provides various packaging and drivers to fully meet your special application needs.

Please consult our engineers for detailed selection

1. Single mode DFB laser tube:

ALPES single-mode DFB quantum cascade laser tube can only emit one wavelength at a time. Its adjustable range can reach 10cm-1, and it can provide multiple modulation schemes based on different application purposes. The main application field of DFB quantum cascade laser tube is spectroscopy.

CW-DFB laser tube 800cm^-1-2320cm^-1

Pulsed DFB laser tube 700cm^-1-2350cm^-1

Cooling DFB laser tube 645cm^-1-2370cm^-1

2. Interband Cascade Laser Tube ICL:

Interband cascaded laser (ICL) is a mid infrared light source with an emission range of 2.7-3.9um, which is particularly important for the detection of hydrocarbons and other gases of interest. Compared with traditional QCL, it has lower dissipation, and some ICL lasers can be used in TO-66 housings in addition to standard TO3 and HHL. ICL-DFB laser is a single-mode laser that can emit one wavelength at a time. They can be tuned within the typical range of 10cm-1, providing multiple modulation schemes, and DFB lasers are mainly used for spectroscopy. They currently have selectable frequencies of 2853cm-1, 2898cm-1, 2913cm-1, and 2946cm-1 (3505 nm, 3450 nm, 3433 nm, and 3394 nm, respectively).

ICL devices are based on different design principles from QCL, which leads to some technical differences. The main difference is that the current, voltage, and power consumption are much lower, making it easier to integrate in smaller packages and systems. The output is usually lower as well. The emitted light is also linearly polarized TE polarization, which is converted to horizontal polarization in HHL packaging.

3. Wide gain QCL laser tube:

4. FP-QCL Fabry Perot Quantum Cascade Laser Tube

FP QCLs Fabry Perot quantum cascade laser tubes can operate at room temperature. Its emission wavelength is the same as DFB QCL. From 740 cm-1 to 2390 cm-1, with similar threshold currents and voltages. The change in temperature has little effect on the transmission bandwidth, which is mainly determined by the supply current. FP-QCL is suitable for acceptable broadband emission, such as in liquid spectroscopy, high-power emission sources, when signal purity is not required or when QCL with an external cavity is used.We have a large selection of pulse or continuous wave FP lasers in our inventory, so please submit your specifications to us based on the above parameters. Through this approach, we can recommend the QCL that is most suitable for your application.

5. High power QCL laser tube

High power QCL lasers can currently operate at the following center wavelengths, with a minimum average power of 1W:
3.95um
4.55um
4.65um
4.90um
9.70um

6. High power pulse QCL laser tube

The high-power pulsed quantum cascade laser is optimized to emit short pulses ranging from 20ns to 1000ns, with a minimum peak power of 20W or~5uJ per pulse. These lasers can be used for free space optical communication, applications, and infrared countermeasures.

7. Expand Tunable QCL Laser

The ALPES Laser offers two types of extended tunable QCL lasers, both of which allow for fast tuning over a wider range than standard DFB lasers at fixed temperatures. QC-ET (described here) allows for fully continuous tuning of over 0.4% of the center wavelength, while QC-XT allows for segmented continuous tuning of over 2% of the center wavelength.

8. Quantum cascade laser

The working range of terahertz quantum cascade lasers is 1-5 terahertz. Coherent polarized terahertz radiation is the result of direct laser transitions of electrons in the conduction band of semiconductor heterostructures.

9. Semiconductor ECDL:For details, please contact Haoliang Optoelectronics

10. Quantum cascade laser

11. Short wave infrared laser tube