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1. Optical Disc and Laser Disc are not synonyms.
2. "Optical Disc" is a general term for Laserdisc (LD), CD and DVD, so you should not use the abbreviation for the term.
3. If your context refers specifically to Laserdisc, then you should use only Laserdisc, which is a type of Optical Discs.

Types of optical discs
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Blu-Ray disc
Compact disc
DVD
HD-DVD
Laserdisc
Magneto-optical disc
Minidisc
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The Laserdisc (LD) was the first commercial optical disc storage medium, and was used primarily for the presentation of movies.

During its development, the format was referred to as the "Reflective Optical Videodisc System" before MCA, who owned the patent on the technology, re-named the format Disco-Vision in 1969. By the time the format was brought to market in 1978, the hyphen was removed from the format name. They marketed it under the name DiscoVision beginning December 15, 1978 after the earlier CRV disc format had died out in obscurity. MCA owned the rights to the largest catalog of films in the world during this time, and they directly manufactured and distributed the discs of their movies under the "MCA DiscoVision" label. Pioneer Electronics, who entered the market almost at exactly the time DiscoVision titles were going on sale in 1978, began manufacturing players and printing discs under the name laser videodisc. By 1981, Laserdisc (first with intercaps as LaserDisc, then later without) had become the common name for the format, and the Discovision label disappeared, simply becoming MCA or (later) MCA-Universal Laserdisc.

MCA also manufactured discs for other companies, including Paramount, Disney and Warner Brothers. Some of them added their own names onto the disc-jacket in order to signify the movie was not owned by MCA. When MCA folded into Universal several years later, Universal began re-issuing many of the early DiscoVision titles as Universal discs. The DiscoVision versions had largely been available only in pan and scan and had often utilized poor transfers. The Universal versions were largely better. The format has also been known as LV (for "LaserVision", actually a player brand by Philips). The players are also sometimes referred to as VDPs (Video Disc Players).
http://en.wikipedia.org/wiki/Laserdisc

In computing, sound reproduction, and video, an optical disc is flat, circular, usually polycarbonate disc whereon data is stored. This data is generally accessed when a special material on the disc (often aluminum) is illuminated with a laser diode.

David Paul Gregg developed an analog optical disk for recording video and patented it in 1961 and 1969 (US patent 3430966). Of special interest is US 4,893,297, first filed in 1968 and issued in 1990, so that it will be a source of royalty income for Pioneer’s DVA till 2007. It encompasses systems such as CD, DVD, and even BluRay. Gregg's company, Gauss Electrophysics, was acquired, along with Gregg's patents, by MCA in the early 1960s.

Parallel, and probably inspired by the developments in the US, a small group of physicists started their first optical videodisc experiments at Philips Research in Eindhoven, The Netherlands in 1969. In 1975, Philips and MCA decided to join forces. In 1978, much too late, the long waited laserdisc was introduced in Atlanta. MCA delivered the discs and Philips the players. It turned out to be a total technical and commercial failure, and quite soon the Philips/MCA cooperation came to an end. In Japan and the US, Pioneer has been successful with the videodisc till the advent of DVD.

Philips and Sony formed a consortium in 1979 to develop a digital audio disc, which resulted in the very successful introduction of the compact disc in 1983.

The promotion of standardised optical storage is undertaken by the Optical Storage Technology Association (OSTA).

The information on an optical disc is stored sequentially on a continuous spiral track from the innermost track and outermost track.
http://en.wikipedia.org/wiki/Optical_disc