First, the latest development of semiconductor lasers
The latest development of 1. semiconductor lasers
Since the development of semiconductor laser (LD), its wavelength has been
From visible light and infrared to far infrared and ultraviolet; Structure comes from
Homogeneous junctions have developed into single heterojunction, double heterojunction and quantum well.
(single quantum well and multiple quantum wells), etc.
Its performance is also constantly improving, and its output
With the continuous improvement of power, the output power of a single device has gone from several hundred.
MW develops to several W; Linear array and two-dimensional array high power LD
The output power has increased from a dozen watts to several kilowatts.
threshold current
The density has been reduced to below 100 A/cm2, as shown in figure 1.
The downward trend of tangent current density.
At present, all developed countries are developing high-power and high-power.
Fast and broadband quantum well lasers (QWLD) have achieved great success.
Development.
The successful development of QWLD is another achievement in the history of work development.
Milestone QwLD based on MOCvD epitaxial technology
The development of bulk material laser >: What ordinary QwLD & gt should do
Varying and compensating strain qwld >: polarization independent semiconductor laser
Optical amplifier: several development stages of photonic and optoelectronic device integration
Duan.
Strain layer QWLD is a new generation of high-speed broadband light source.
2. Photonic crystal laser
3. Quantum dot laser
4. Quantum cascade laser
Second, the latest development of fiber lasers
Third, the latest development of pumped solid-state lasers
Fourthly, the latest development of nano-lasers.
Due to the limited space, please send a letter to my mailbox for laser progress information. Please take the answer czq 1983@vip.qq before requesting.