Lasers are an indispensable part of our everyday life.
Whether using a CD player, sending e-mail, or calling someone long distance, we are ultimately using a laser. One of the trends in technology is to make lasers as miniature as possible, while simultaneously improving their performance. A crucial need in technology is to make lasers more efficient, to perform better and faster and be more versatile. Even though they are already on the market, there is still substantial research that needs to be done in optimizing performance of the lasers. One of the problems that arises with the use of any diode laser is the problem of optical feedback, which is the reflection of emitted laser light back into the lasing cavity.