One possible way to do this is by using optical cavities.

About 30% of the lost energy was due to the optical cavity and filters.

In an optical cavity, the pump field will form a standing wave.

To understand this in terms of optics, we need to take a closer look at what an optical cavity is.

The end result is that lots of light enters the optical cavity and none leaves.

By putting the atoms between two mirrors, we create an optical cavity.

In this device, you have an optical cavity with a crystal between the mirrors.

Long optical cavities are very sensitive to the mirror alignment.

External dielectric mirrors then are used to form the optical cavity.

To do this, they put it in an optical cavity and shine some light on it.

As in other lasers, the gain region is surrounded with an optical cavity to form a laser.

In this way, while the photon is trapped, the scatters may act as an optical cavity.

If there is a bomb in the cavity, then the properties of the optical cavity will be wrong, and the light can't get inside.

The output coupler may be either flat or curved, depending on the design of the optical cavity.

Lasers use optical cavities in the form of a pair of facing mirrors.

For an optical cavity consisting of two mirrors, confocal means that they share their foci.

This sound beam propagates not in an optical cavity, but in a different active medium.

The fundamental difference between a conventional optical cavity and microcavities is the effects that arise from the small dimensions of the system.

The filtered light is passively coupled into a stable optical cavity formed by two mirrors.

A transparent dielectric sphere, such as a liquid droplet, also forms an interesting optical cavity.

An excellent two-part review of the history of optical cavities:

Some important properties of laser diodes are determined by the geometry of the optical cavity.

Since the optical cavity is a delay line, a laser can be regarded as a special case of the delay-line oscillator.

Phenomena related to morphology-dependent resonances in a spherical optical cavity have been studied by several research groups.

The atom interacts with a single-mode field confined to a limited volume V in an optical cavity.