Beate Stephan Falconer has written:

'Grating-tuned external cavity diode lasers' -- subject(s): Design and construction, Semiconductor lasers, Tunable lasers, Silicon oxide films

Diode Lasers can be purchased at all leading hardware stores globally. It can also be purchased through online businesses such as Amazon at a great deal of prices and discounts.

Not usually. Laser pointers are usually diode lasers.

Semiconductor lasers are made with laser diodes, with added circuitry to measure and regulate the diode current/output.

DPSS (Diode-Pumped Solid-State) lasers are more efficient that normal lasers. They are primarily used in laser pointers, with the green laser being the stongest and yellow the weakest.