- •Л.П. Маркушевская, с.В. Шенцова, е.В. Соколова optics:
- •Contents
- •The History of Optics
- •Understanding a printed text
- •Comprehensive reading The History of Optics
- •Check your understanding
- •Exercise 2. Complete the sentences:
- •Increase your vocabulary
- •Chapter I Classical (Geometrical) Optics
- •Comprehensive reading From the History of Geometrical Optics
- •Check your understanding Exercise 1. True or false?
- •Exercise 2. Choose the correct answer.
- •Increase your vocabulary
- •A virtual image …
- •Language activity
- •Unit 2 word-study
- •Understanding a printed text
- •Reading for precise information Nature of Light and Color
- •Laws of reflection:
- •Laws of refraction:
- •Check your understanding
- •3 Laws
- •Increase your vocabulary
- •Language activity
- •Unit 3 word-study
- •Understanding a printed text
- •Scan-reading Optical Instruments
- •Check your understanding
- •Increase your vocabulary
- •Language activity
- •Exercise 4. Summarize your knowledge of Past Simple or Past Continuous. Choose the correct tense.
- •Unit 4 word study
- •Understanding a printed text List of Terms:
- •Reading and translating the text Lenses
- •Check your understanding
- •Increase your vocabulary
- •Language activity
- •Unit 5 word study
- •Understanding a printed text List of Terms:
- •Read the text and entitle it
- •Check your understanding
- •Increase your vocabulary
- •Language acitivity
- •Review of the chapter I
- •Supplementary tasks
- •Improve your translation practice task 1
- •The History of the Telescope
- •Exercise 1. Rearrange the sentences in the chronological order.
- •Holography
- •Illumination, never remove protective cover from the
- •Астрономические наблюдения объектов в широком диапазоне длин волн
- •Chapter II Fiber Optics Unit 1
- •Comprehensive reading The History of Fiber Optics
- •Check your understanding Exercise 1. Answer the following questions.
- •Increase your vocabulary Exercise 1. Compare the two columns and find Russian equivalents.
- •Exercise 2. Match the antonyms.
- •Language activity Exercise 1. Summarize your knowledge of Passive Constructions and translate the following sentences.
- •Fiber Optic Systems
- •Fiber Optic Technology
- •Check your understanding
- •Exercise 2. Complete the sentences with words from the text.
- •Increase your vocabulary
- •Language activity
- •Unit 3 word-study
- •Understanding a printed text
- •Reading and translating the text
- •Check your understanding Exercise 1. Which title better suits the text?
- •Increase your vocabulary
- •Language activity
- •Exercise 2. Which of the italicized words in each sentence is the predicate?
- •Unit 4 word study
- •Read – reread;
- •Understanding a printed text
- •Comprehensive reading Optical Fiber Applications
- •Check your understanding
- •Increase your vocabulary
- •Language activity
- •Rewiew of the chapter II
- •Supplementary tasks
- •Improve your translation practice task 1
- •Fiber Optic Economics
- •Exercise 1. Answer the questions.
- •Exercise 2. Translate the following parentheses into Russian.
- •How Optical Fibers Work
- •Chapter III
- •Word study
- •Understanding a printed text
- •Amplifier – усилитель
- •Reading for discussion Maser-Laser History
- •Check your understanding
- •Increase your vocabulary
- •Language activity
- •Unit 2 word study
- •Understanding a printed text
- •Reading for precise information Types of Lasers
- •Solid-State Lasers
- •Gas Lasers
- •Semiconductor Lasers
- •Free-Electron Lasers
- •Liquid Lasers (Dye Lasers)
- •Chemical Lasers
- •Check your understanding
- •Increase your vocabulary
- •Language activity
- •Comprehensive reading Solid - State Lasers
- •Semiconductor Lasers
- •Check your understanding
- •Increase your vocabulary
- •Adjectives
- •Language activity
- •Unit 4 word-study
- •Understanding a printed text
- •Comprehensive reading Gas and Molecular Lasers Gas Lasers
- •Fig.1. Construction of He-Ne laser
- •Molecular Lasers
- •Check your understanding
- •Increase your vocabulary
- •Language activity
- •Exercise 3. Summarize your knowledge on non-Finite forms. Define the form of the underlined words (Infinitive, Participle - I, Participle - II, Gerund). Translate the sentences.
- •Unit 5 word study
- •Verb – noun
- •Understanding a printed text
- •Scan-reading Laser Applications
- •Industry
- •Scientific Research
- •Communication
- •Medicine
- •Military Technology
- •Laser Safety
- •Check your understanding
- •Increase your vocabulary
- •Exercise 2. Translate the following word combinations with Participle II as an attribute.
- •Language activity
- •Exercise 3. Cross out “that”, “who”, “which”, “when” if one can manage without them. Underline the subject in the second sentence.
- •Supplementery tasks
- •Improve your translation practice
- •Лазерная сварка
- •Лазеры в медицине
- •How a Laser Works The Basics of an Atom
- •The Connection Between Atoms and Lasers
- •Understanding a printed text
- •Lasers in Communication
- •Laser Uses
- •Appendix I Химические формулы
- •Appendix II
- •Appendix III Business Communication
- •I. Introduction. Writing and Speaking – Your Keys to Business Success.
- •II. The job campaign
- •Working Experience
- •Curriculum vitae
- •Education
- •III. Business letters
- •I. Introducing your firm (the body the message of a letter).
- •II. Official Invitations
- •III. Request
- •IV. Claim, protest!
- •V. Gratitude, thanks.
- •VI. Regret, apology
- •Supplementary reading appendix IV Albert Einstein
- •Arthur l. Schawlow
- •Charles h. Townes
- •Aleksandr m. Prokhorov
- •Nicolay g. Basov
- •Ted Maiman and the world's first laser
- •Dictionary
- •Haze, n – туман, дымка
- •Observe, V – наблюдать
- •Optics, n – оптика, оптические приборы
- •Literature
Check your understanding
Exercise 1. Answer the following questions.
What are the major properties of laser radiation?
In what way is a laser used in practice?
What is the working element of a ruby laser?
When was the first semiconductor laser invented?
What elements does it consist of?
What do two parallel mirrors provide?
At what temperatures do these lasers operate?
In what way is the p-n junction made?
Under what conditions does the laser emit light?
What semiconductors are used in the injection lasers?
What are the advantages of a semiconductor laser?
Exercise 2. Define what is true and what is false.
Laser light can travel a large distance in outer space with little reduction in signal strength.
The gallium arsenide semiconductor laser was invented in 1962.
The lasers usually operate at 770C or lower.
When the intense electric current about 10000 amperes per square centimeter is applied to the device, it emits coherent or incoherent light.
The mirrors on either end of the active region provide the optical feedback.
Exercise 3. Finish the sentences with the suitable parts.
In practice a laser is used as…
... an amplifier of current.
... a source of radiation.
... a frequency converter.
2. This intensity of the laser radiation...
... is equal to that of the spontaneous radiation.
... is smaller than that of the spontaneous radiation.
... exceeds that of the spontaneous radiation.
A resonant cavity is necessary …
… to produce photon emission.
… to produce coherent radiation.
… to produce diffusion electron.
In semiconductor laser light is emitted …
… from a layer of the p-type GaAs.
… from a layer of the n-type GaAs.
… from the junction between the two layers.
Two parallel mirrors in the laser provide …
…a resonant cavity.
…a p-n junction.
…optical pumping.
Increase your vocabulary
Exercise 1. Match Russian and English equivalents.
1 |
2 |
1) uniform junction |
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2) parallel mirrors |
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3) resonant cavity |
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4) coherent light |
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5) entire area |
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6) photon emission |
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7) active region |
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8) optical feedback |
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9) reflective film |
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10) radiation efficiency |
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Exercise 2. Match the synonyms.