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Questions related from Chee-Wei Lee
How do I experimentally obtain the group index or phase index of waveguides? What kind of waveguide could help? Any literatures?
04 April 2019 9,089 6 View
Anyone has any semiconductor Q switched laser to share with me?
08 August 2017 6,399 1 View
Any one know of any chemical mixtures that can wet etch P-doped GaP?
12 December 2016 3,887 1 View
What wet etch chemicals can selectively etch InGaN over GaN, or GaN over InGaN?
10 October 2016 4,098 4 View
Can anyone share your experience in good negative photoresist and resist stripper? Negative resist: Thinkness more than 1.5 um, resolution better than 3 um, and UV exposure (i, g-line).
10 October 2016 3,555 5 View
What kind of metal layer is best for p-metal contact with p-doped InGaAs? I had experience where a p-i-n diode turns into resistor-like I-V curve after pumping at current higher than 100 mA. What...
08 August 2014 4,246 3 View
Other than using the L-I curve and the spectral linewidth of a fabricated semiconductor laser device, such as disk or FP laser, is there any other way that we can be more certain that we have...
04 April 2014 804 12 View
Free 3D BPM software.
03 March 2014 1,289 0 View
For the ridge waveguide (high index contrast waveguide) MQWs laser that I recently fabricated, the threshold is low at less than 20 mA, but the output power is also low at just a few uW. This...
02 February 2014 1,911 4 View
