Podcast
Questions and Answers
What property of a double-heterojunction laser scales as d^-1, where d is the height of the active region?
What property of a double-heterojunction laser scales as d^-1, where d is the height of the active region?
- Diffraction grating
- Gain (correct)
- Refractive index distribution
- Output profile
In semiconductor lasers, what is a benefit of further miniaturization of the active region?
In semiconductor lasers, what is a benefit of further miniaturization of the active region?
- Reduced gain
- Increased temperature sensitivity
- Lower threshold currents (correct)
- Quantized electron motion
What is a characteristic of quantum film, quantum wire, and quantum dot lasers?
What is a characteristic of quantum film, quantum wire, and quantum dot lasers?
- Continuous energy levels
- Discrete energy levels (correct)
- Lower threshold currents
- Increased temperature sensitivity
What is the most unwanted property of a laser diode that results in the change of laser wavelength with temperature?
What is the most unwanted property of a laser diode that results in the change of laser wavelength with temperature?
How does an external cavity concept overcome mode hop in laser diodes?
How does an external cavity concept overcome mode hop in laser diodes?
What additional components are integrated during laser crystal manufacturing to control the laser wavelength and coherence properties?
What additional components are integrated during laser crystal manufacturing to control the laser wavelength and coherence properties?
What effect does reduced dimensionality structures have on semiconductor lasers?
What effect does reduced dimensionality structures have on semiconductor lasers?
What is the concept that makes use of a diffraction grating at the Littrow configuration to overcome mode hop in laser diodes?
What is the concept that makes use of a diffraction grating at the Littrow configuration to overcome mode hop in laser diodes?
What is a significant benefit of quantum film, quantum wire, and quantum dot lasers compared to conventional heterostructures?
What is a significant benefit of quantum film, quantum wire, and quantum dot lasers compared to conventional heterostructures?
